Data modeling.
Database Administrator at a healthcare company with 1,001-5,000 employees
Our developers can now see the relationships
Pros and Cons
- "The reverse engineering is the most important feature."
- "When building the relationships there should be a little more flexibility."
What is our primary use case?
How has it helped my organization?
The developers can see the relationships now.
What is most valuable?
The reverse engineering is the most important feature. The relationships are also important.
What needs improvement?
When building the relationships there should be a little more flexibility.
Buyer's Guide
IDERA ER/Studio
June 2025

Learn what your peers think about IDERA ER/Studio. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
857,028 professionals have used our research since 2012.
What do I think about the stability of the solution?
I have not encountered any issues with stability.
What do I think about the scalability of the solution?
I have not encountered any issues with scalability.
How are customer service and support?
Tech support is pretty good. They resolve issues right away, I usually don't have to wait too long.
Which solution did I use previously and why did I switch?
I used a little bit of SQL Server. It has a data modeling tool. I also used some ERwin before that, a couple years ago.
How was the initial setup?
The initial setup was pretty easy.
What's my experience with pricing, setup cost, and licensing?
I feel the product's pricing is a good value.
Which other solutions did I evaluate?
I looked at ERwin.
Disclosure: PeerSpot contacted the reviewer to collect the review and to validate authenticity. The reviewer was referred by the vendor, but the review is not subject to editing or approval by the vendor.
IT Specialist at a government with 10,001+ employees
Helps us identify duplication and non-conformity in our databases and create a more standardized solution
Pros and Cons
- "We found a lot of duplication, a lot of non-conformity in the way our databases were designed. By identifying these situations, we're able to go back in and try to create a more standardized solution."
- "We did have a big issue when we upgraded to the 2016 version. The Team Server portion never did quite install correctly, and/or the database was corrupted, and we never figured it out."
- "Tech support is a sticking point with me. I am really disappointed in the tech support. We pay for the Platinum level. It takes hours to get a response."
What is our primary use case?
We're supposed to be using it for designing new data models, appending and editing data models. We're doing a lot of reverse engineering on our existing databases.
But we have a plan in the works to begin using it as part of our data governance process, something we don't have currently.
How has it helped my organization?
We found a lot of duplication, a lot of non-conformity in the way our databases were designed. By identifying these situations, we're able to go back in and try to create a more standardized solution.
What is most valuable?
The most valuable feature is data modeling, primarily, because it's something that has been lacking in our systems development for 20 years. There was no accountability for data structure.
For how long have I used the solution?
More than five years.
What do I think about the stability of the solution?
We did have a big issue when we upgraded to the 2016 version. The Team Server portion never did quite install correctly, and/or the database was corrupted, and we never figured it out.
We're in the process of trying to upgrade to the most current version now, and we're starting over with a fresh database. Then we'll move models from the old version to the new version instead of trying to upgrade.
What do I think about the scalability of the solution?
We've had no issues with scalability.
How are customer service and technical support?
Tech support is a sticking point with me. I am really disappointed in the tech support. We pay for the Platinum level. It takes hours to get a response. We're on East Coast time. I know that most of their support people are West Coast, but it's very common for me to put in a call in the morning, prior to lunch, and get a response from someone after I've gone home for the day. I then come in the next morning and try to connect with that person and, of course, they're not in yet. I've had some really disappointing experiences with support.
Which solution did I use previously and why did I switch?
We had a hodgepodge of tools. The only one that had previously been used as our "official" tool for a while was Sybase PowerDesigner. It did well, but when we tried to come up with a standard of what we were going to move to, we had some federal employees and some of our contract employees all saying, "Well, I want to use this," and, "I want to use that." We couldn't standardize on anything. We did some market research and decided ER/Studio was the thing to use, and standardized from there.
How was the initial setup?
The first few years, we only had the standalone ER/Studio, without the Team Server, without the Repository. Of course, that was a straightforward Windows install.
When we first got the Repository and Team Server, they were different products. The Repository installed fine, the Team server installed fine. We didn't really have an issue until the upgrade to 2016, where the Team Server was combined with the Repository. Apparently, there was a step in the instructions that was easily overlooked, and sure enough, I overlooked it.
We've got some training coming up. We want to learn more of the features of the tool, things like the Data Lineage and how to use the ETL tools. We bought this great product and we're not taking advantage of it. That's my only complaint.
What's my experience with pricing, setup cost, and licensing?
I'm a firm believer that all software is overpriced these days but, comparatively speaking, I think ER/Studio is worth the money.
We have to use the Enterprise License Center, what used to be AppWave, and I hate it. We've got concurrent user licenses for ER/Studio, but we also use it for the Embarcadero RAD Studio. We're in a multi-user environment where we have federal users who work here in headquarters, we have contract users who work in their offices, we have contract users who work from home. In order to get the Enterprise License Center to work, they have to be on our network, at least temporarily, to get the License Center to recognize the software and set up. It's a battle every time, trying to get somebody's license renewed or upgraded. There needs to be a better way.
Which other solutions did I evaluate?
We looked at Sybase PowerDesigner again. I recall at the time they said it wasn't going to be supported anymore, but apparently, it still is. Of course, we looked at ERwin but a lot of people thought the ERwin interface was clunky back then. And at that time, there weren't any freeware or shareware tools that were comparable. So those were the main three options we looked at.
What other advice do I have?
Especially with the Repository/Team Server installation, get Idera to install it for you. Just watch over their shoulder while they do it.
Otherwise, just learn it and enjoy it.
I rate this product at nine out of 10 because it does so much. It's so powerful. The only reason I don't give it a 10 is because it probably has things in it that I'll never use because I don't know how to use them.
Disclosure: PeerSpot contacted the reviewer to collect the review and to validate authenticity. The reviewer was referred by the vendor, but the review is not subject to editing or approval by the vendor.
Buyer's Guide
IDERA ER/Studio
June 2025

Learn what your peers think about IDERA ER/Studio. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
857,028 professionals have used our research since 2012.
Database Designer at a manufacturing company with 1,001-5,000 employees
Enables us to visually represent what database tables will look like and their relationships
Pros and Cons
- "We have a database design group of about 15 people. The Repository enables multiple people to work on the same model at the same time. We have fully integrated models, so we have one model for the enterprise data warehouse, one model for MDM, with a lot of sub-models in these things. People work on different parts of the model at different times. So the repository enables us to share the models, and keep track of what everybody is working on."
- "Valuable features include the ability to visually represent what the database tables are going to look like and their relationships. Also, the ability to document the definitions of the tables and the columns that are in a table so that we can communicate what the data is and how it should be used."
- "What I would like to see improved is the reliability of the releases, releases that are a little less buggy."
- "I'd like the ability to debug the errors ourselves instead of having to call them. There are certain types of errors that, I wouldn't say they come up regularly, but when you have an error it is very often the same type of error. Knowing that it's a Type III or Type I, it would be nice to have some kind of debugging facility for us to use to find out where the problem that threw that error occurs. That would be a really cool feature."
- "We would always like to see Repository performance improve, checking in and checking out."
What is our primary use case?
Data modeling and database design for PepsiCo.
How has it helped my organization?
We were using ERwin before we used ER/Studio. I've been doing data modeling for well over 20 years. Converting from one to the other at the time, ER/Studio was more sophisticated, gave us better functionality, and was more reliable.
What is most valuable?
The ability to visually represent what the database tables are going to look like and their relationships. Also, the ability to document the definitions of the tables and the columns that are in a table so that we can communicate what the data is and how it should be used.
The Repository, as well. We have a database design group of about 15 people. The Repository enables multiple people to work on the same model at the same time. We have fully integrated models, so we have one model for the enterprise data warehouse, one model for MDM, with a lot of sub-models in these things. People work on different parts of the model at different times. So the Repository enables us to share the models, and keep track of what everybody is working on.
What needs improvement?
What I would like to see improved is the reliability of the releases, releases that are a little less buggy.
Also, I'd like the ability to debug the errors ourselves instead of having to call them. There are certain types of errors that, I wouldn't say they come up regularly, but when you have an error it is very often the same type of error. Knowing that it's a Type III or Type I, it would be nice to have some kind of debugging facility for us to use, to find out where the problem that threw that error occurs. That would be a really cool feature.
For how long have I used the solution?
More than five years.
What do I think about the stability of the solution?
It is mostly stable. We do throw errors every once in a while. We don't have a tremendous problem with stability, but we would always like to see Repository performance improve, checking in and checking out.
What do I think about the scalability of the solution?
We haven't had any issues with scalability because the product works on individual workstations. We have shared licenses but everybody works on their own workstation. It's only when it goes back into the Repository that everything comes together. So, working individually is never a problem. You just need enough memory on your machine.
How are customer service and technical support?
Tech support has been good. I have no complaints about it.
We haven't needed to use tech support in quite a while. But when we do, we have to go through whatever their process is, and if we haven't been able to resolve it through the regular process, then we get an individual person that we talk with directly to work with us to solve the problem. They have gotten onto our machines with us. They've been very responsive. They have their standard routine of what they have to do, but if that doesn't solve something, then they will get on with us individually or they ask us to send them the model and they figure it out.
Which solution did I use previously and why did I switch?
We were using ERwin back in the early 2000s. Whenever we got a release, it was buggy. I didn't love ERwin at the time and we were looking for another solution. We had ER/Studio and Embarcadero come and talk to us. We got really excited about the tool, ER/Studio. It was going in a direction that sounded like it would be better for us at the time. It had more features that impressed us at the time and it was easy to convert.
How was the initial setup?
It was 15 years ago. I think they came in and helped us when we did the setup. The setup of the tool itself is easy. The issues that we had were related to our environment. The tool is easy to set up but it depends on what your enterprise's architecture is. It's really about the Repository. The standalone workstations are easy. But if you're dealing with the Repository and enterprise architecture that makes it a little bit more complex. Then you have issues and you need their support.
What's my experience with pricing, setup cost, and licensing?
I am not involved in the pricing. We have one person who does that. so I have no knowledge of what it is.
We have some individual licenses and then we have a concurrent license. And it's been working fine.
What other advice do I have?
Try to take advantage of as many of the features as you can. It has a wealth of time-savers and features that are extremely useful. We haven't been able to use all of them because we already had so much done. To try and use some of them by going back over thousands and thousands of tables and columns would have been impossible. If you are is just starting with it, if you can take advantage of the Data Lineage and some of the other interesting features that it has, it is definitely worthwhile.
My rating comes from a purely selfish perspective, in the way I use it. For what I do, I give it an eight out of 10. The reason is - and this is partly our fault because we haven't finished, we haven't upgraded to newest release yet - that there are some buggy things in it that we still have to get resolved. For us, upgrading is very difficult because we have so many people, and we have to coordinate with our database people. Our services are now outsourced, so to coordinate things and get everybody on and get an upgrade done is not easy. Obviously, we try to avoid it as long as we can.
Disclosure: PeerSpot contacted the reviewer to collect the review and to validate authenticity. The reviewer was referred by the vendor, but the review is not subject to editing or approval by the vendor.
Data Architect at a computer software company with 1,001-5,000 employees
The portal enables our entire team to see the model, but licensing and upgrades could be improved
Pros and Cons
- "It's easy to model and has a user-friendly interface. I like the team portal because, once we upload, the entire team can see the model."
- "Whenever there is a new version, there are a lot of release notes on the technical side of it, but I would like to be told why are we doing the upgrade... What I would like to really see is how this benefits us from the business point of view. What are the real benefits that the user gets? I want some kind of way white paper. The release notes describe the technical enhancements but, from the layman's point of view, if someone asks me what are the business benefits of this upgrade, I don't have any documentation to explain it to the business."
What is our primary use case?
The primary use would be all the data modeling of the enterprise. People can access the data model through the portal: all the modeling and all the data dictionary, column-level documentation, glossaries, etc. We use the portal for maintaining those.
The main tool that we use is IDERA Architect on the team portal.
How has it helped my organization?
Before this tool, just managing the changes and publishing the models to the users became very cumbersome. This tool has simplified our day-to-day tasks a lot.
What is most valuable?
- Easy to model.
- Has a user-friendly interface.
- I like the team portal because, once we upload, the entire team can see the model.
What needs improvement?
Whenever there is a new version, there are a lot of release notes on the technical side of it, but I would like to be told why are we doing the upgrade. For example, we are moving from 16 to 17. What I would like to really see is how this benefits us from the business point of view. What are the real benefits that the user gets? I want some kind of white paper. The release notes describe the technical enhancements but, from the layman's point of view, if someone asks me what are the business benefits of this upgrade, I don't have any documentation to explain it to the business.
I already mentioned this to my account manager. He said they will put me with one of the product development teams to have this kind of discussion.
For how long have I used the solution?
One to three years.
What do I think about the stability of the solution?
There have been some issues with performance, and there are some issues with inconsistencies.
We are also working to upgrade our servers. With more and more model and more and more operators, the check-in and the checkout processes are somewhat slow. Right now it's difficult for us to tell if it is, in fact, a product issue. We are upgrading our servers. We will have to really test it. Right now, if there are more than two or three users using the product, we sometimes face the issue.
How is customer service and technical support?
We bought premium support and so far it is good. The normal technical support is okay; I would not rate it too high. After we got the premium support things were much better. Regarding the last upgrade, they really helped us by walking us through it step by step. That was really good.
We always want to have peace of mind that we can reach them. When we had regular support, sometimes it was very difficult to get hold of them. We upgraded our support to premium, to make sure that we get the proper attention.
How was the initial setup?
The initial setup was straightforward. While there is some documentation, we had a live session and the support and product management team really walked us through, so it was straightforward. There are some areas that we do by looking at the documentation.
What's my experience with pricing, setup cost, and licensing?
The licensing could be a little bit more flexible. The issue we face is that it is kind of complex the way the keys are set up. I'm not sure if it's by design, but let's say you have to install a product on a test system. You have to get a trial license key, even though you have been a loyal customer for two years. It's just very difficult to again request an additional key and then go through all the setup. It could be much simpler.
The way we update the licenses is also a complex. I have to register the keys every time. And when we do it online there can be errors so we have to go to the workaround to be able to work on the data.
The process of licensing could be much simpler, from our experience.
Which other solutions did I evaluate?
We evaluated ERwin and some other products.
What other advice do I have?
It's a good tool but we have not had much training, so we are really exploring it on our own. There are some features we are still working on with our stakeholders to implement. So my advice to other customers who are implementing this product is to really understand the full features of the product and try to implement all the features at the beginning. Get training in all areas of expertise before launching the product. I wish we could have done that from the beginning.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Data Architect at a insurance company with 1,001-5,000 employees
We have been able to quickly create models for our enterprise-wide databases
Pros and Cons
- "We are able to document the data lineage and data flows of our data from one system to another."
- "We have been able to quickly create models for our enterprise-wide databases, even when some of them are third-party databases."
- "Modeling with Data Architect: We can quickly reverse-engineer a database from an existing database or create a model from scratch."
- "Data lineage tracking: It allows us to identify upstream and downstream systems using data."
- "I would like to see better documentation/help for the Data Architect tool. Creation of tutorials would be nice, as there are some features which are not as clearly defined as they should be."
What is our primary use case?
To develop an underlying platform upon which to base our data governance program by creating a central repository for maintaining and disseminating logical, physical models for our enterprise-wide databases.
How has it helped my organization?
We have been able to quickly create models for our enterprise-wide databases, even when some of them are third-party databases. We have been able to then modify those models, breaking them down to make them more understandable. Loading these models into the ER/Studio Team Server repository, it allows us to disseminate this information to the entire enterprise.
Team Server allows us to further define those models through the use of glossaries and gives us the ability to collaborate as a data governance team to ensure that terms defined provide us a common understanding of our data. We are also able to document the data lineage and data flows of our data from one system to another.
What is most valuable?
- Modeling with Data Architect: We can quickly reverse-engineer a database from an existing database or create a model from scratch.
- Data lineage tracking: It allows us to identify upstream and downstream systems using data. This allows us to identify downstream impacts of making changes to data in a particular system, before the downstream systems break.
- Collaboration features in Team Server: With discussion threads, email notifications, and streams, we can collaborate with team members to make sure that models and glossaries are sufficiently defined to accurately and concisely reflect the meaning, purpose, etc. of our enterprise data.
- Change management: We can track changes to our data models and tie those changes back to specific tasks or efforts that we identify.
What needs improvement?
I would like to see better documentation/help for the Data Architect tool.
Creation of tutorials would be nice. There are some features which are not as clearly defined as they should be.
For how long have I used the solution?
One to three years.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Administrador de Dados at a non-tech company with 5,001-10,000 employees
Enables creation of multiple automations, improving security and centralization
Pros and Cons
- "This application does a lot of things, as do competitor products, but the main reason to go with this product was the ability to create many automations, where we can improve our work and our process."
- "Sometimes our version is a little unstable. But I think this problem occurs because our version is old."
What is most valuable?
This application does a lot of things, as do competitor products, but the main reason to go with this product was the ability to create many automations, where we can improve our work and our process.
How has it helped my organization?
Organization, security, centralization.
What needs improvement?
The product is pricey.
For how long have I used the solution?
About four years.
What do I think about the stability of the solution?
Sometimes our version is a little unstable. But I think this problem occurs because our version is old. We are in the migration process to the current version.
What do I think about the scalability of the solution?
No.
How are customer service and technical support?
Very good. When we need, they respond to us quickly.
Which solution did I use previously and why did I switch?
I didn’t use other solutions in my work, only in tests.
How was the initial setup?
A support member in my company helped with the initial installation.
What's my experience with pricing, setup cost, and licensing?
The product can have a high price.
Which other solutions did I evaluate?
Yes. erwin and ePower.
What other advice do I have?
Talk with other people before purchasing to learn about their experience with the product.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Database Architect at a healthcare company with 1,001-5,000 employees
Although it allows for many different options for what can be displayed on the model, it would be nice if they allowed entity objects (attributes, indexes, keys...) as well as the textual definition.
What is most valuable?
The ability to define a set of domain definitions and group them in folders is a valuable feature. There is also a Macro (VB script) feature that allows you to automate many features that can save a lot of time.
What needs improvement?
Although the tool allows for many different options as far as the what can be displayed on the model, it would be nice if they allowed for entity objects (attributes, indexes, keys, etc.) as well as the textual definition of the object. The current design only allows one or the other. I like to have a little verbiage on each entity included in the model that describes it purpose, this is allowed in the tool but you can't show both the entity structure and the text at the same time without creating a separate text object and placing the text in it.
For how long have I used the solution?
I've been personally using this product for 9 Years.
What was my experience with deployment of the solution?
Deployment can be complicated with their licensing model. I typically have to call tech support to get the correct files and licensing all straightened out.
What do I think about the scalability of the solution?
The repository which is used to store the models can slow down when multiple models are added. This has improved with later releases but it is still slow at times.
How are customer service and technical support?
Customer Service:
Customer service is very good but they're a west coast company and we're on the east coast and I have to wait until later in the morning before I can talk to a support person.
Technical Support:Technical support is typically very good.
Which solution did I use previously and why did I switch?
I had prior experience with Sybase's Power Designer tool at a former employer. When I came to this company they had other Embarcadero tools and were interested in using a single vendor for SQL Server development.
How was the initial setup?
Installation of the product itself is straight forward although the licensing process is awkward and confusing at best. If you have a workstation license that's not to bad, but we have a WS and 2 different concurrent licenses, which requires a license server set up and getting all the proper installations products requires (me anyway) to contact the support to get the correct files and the correct licensing information.
If you have a repository setup that increases the process even more.
What about the implementation team?
I'm the administrator for our ER/Studio setup for our IT department, we have 5 or so actual users of the tool.
What's my experience with pricing, setup cost, and licensing?
Fairly expensive tool and licensing setup is cumbersome.
Which other solutions did I evaluate?
Sybase Power Designer
What other advice do I have?
It's a great tool for modeling and I'm generally very happy with its features.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Data Analyst at a university with 1,001-5,000 employees
It is recommended for those with the resources to maintain it.
This review comes from the point of view of a technical tools administrator who is only an occasional data modeller at this stage.
We're using Embarcadero Repository Server with ER/Studio, Team Server and the Data Lineage Tool, on in-house servers. Trialled on workstations from 2013 (XE3), first installed in Development server environment in August 2014 (XE5), went to Production in December 2014. Currently up to XE7 in Dev, XE6 in Prod.
We installed with onsite assistance, and had a quick and effective response from the development team when the onsite Embarcadero resource requested a workaround for our non-standard MS SQL server port.
Licensing for Repository Server is a bizarre chain of:
- Install Embarcadero License Center on hosting server (only needed once, at first installation)
- From purchase order, get login details for Maintenance Delivery Portal website
- From Maintenance Delivery Portal, get login details for License Hosting website
- In License Hosting site, give hosting server details, get licence config files
- Log into Embarcadero License Center, apply server licence file
- Create user accounts in ER/Studio, give users user licence files
It's fiddly but manageable with a tech to guide you through it, or when referring to your own documentation for subsequent installations/upgrades.
Team Server involves an odd hybrid method in which serial numbers are extracted from Delivery Portal and applied directly to Team Server, user accounts are sync'd from ER/Studio and then granted the right to use a licence seat. We still haven't got team server working. Took several months just to understand the licensing (limited to Repo users, not the read-only free-for-all we'd been given to expect), several more to get models properly sync'd from the repo, and still can't get anything to actually load for those who do have viewing rights. They say an upgrade should fix it, but that's been delayed by repository upgrade problems.
The Data Lineage Tool likewise was a nightmare to get licensed and a nuisance to try to use.
After installation and licensing, the product itself is fairly stable. Larger models make Repo Server a bit slow and Team Server struggle to sync properly. Administration mostly involves adding/removing licences and occasionally re-starting the services, unless something goes properly wrong.
Documentation tends to range from pointless to incomprehensible. It does have specific instructions for various straightforward situations (where's the button that does X?). Information about anything more complicated is mostly absent, vague or contradictory. This goes for both the wiki and the PDF manuals. Careful and thorough reading can make things worse, as some paragraphs appear to contradict each other (and advice from Support). To further complicate matters, the names of products/features/actions are inconsistent - some have changed over time with upgrades and some are internally inconsistent - e.g. the toolbar button and menu item for the same function may have completely different text labels.
Dealing with Support has been frustrating. Recurring problems have included:
- Responding to very specific questions with vague references to irrelevant documentation
- Providing internally inconsistent, conflicting or even counter-productive advice
- Requesting screenshots/troubleshooting tests that have already been provides
- Not responding at all for a week or two (and only then because we prodded)
However, they've recently been making a good-faith effort to improve this service. They set up a meeting to discuss our specific needs, and what we as a major customer would like to see in upcoming releases. And they set up a conference call to discuss our open support requests and the support issues in general. The only communication lag since then has coincided with the USA's Thanksgiving holiday, which is understandable.
Overall, the product is very powerful and versatile for the task it's designed to do. They seem sincere about taking feedback and improving both product and service. For all the pain of licensing and maintenance, ultimately it's probably worth it.
I can't recommend Team Server as we still haven't got what we paid for. But I would definitely recommend ER/Studio as long as you can afford it, have someone available for ad-hoc systems administration, and are prepared to actively chase up Support requests if necessary.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

Buyer's Guide
Download our free IDERA ER/Studio Report and get advice and tips from experienced pros
sharing their opinions.
Updated: June 2025
Popular Comparisons
Sparx Systems Enterprise Architect
erwin Data Modeler by Quest
SAP PowerDesigner
BiZZdesign HoriZZon
iServer
Redgate SQL Toolbelt Essentials
erwin Evolve by Quest
Toad Data Modeler
Oracle Coherence
Aqua Data Studio
Komprise
Buyer's Guide
Download our free IDERA ER/Studio Report and get advice and tips from experienced pros
sharing their opinions.
Quick Links
Learn More: Questions:
- Can you recommend a graphic illustration tool to model the architecture of IT systems?
- When evaluating Architecture Management, what aspect do you think is the most important to look for?
- Tools to Develop and Manage IT Infrastructure Road-maps
- Sparx system comparing with ARIS and IBM blueworks.
- What EA tool would you advise us to use?
- What are some business benefits associated with enterprise architecture?
- Any experience on newer/low-cost cloud based EA Modelling Tools?
- How to model an enterprise architecture? What tools and templates can I use?
- How to export IBM Rational System Architect data into Alfabet Enterprise Architecture Management (by Software AG)?
- Reading meta-data off local ERwin model.
I just updated this review, the title was missing a key point and I noticed a few misspellings and type-o's.
It reads a bit better now.