IBM DevOps Code ClearCase vs. IBM Rational ClearQuest

IBM Rational ClearCase might be better suited for a smaller / simpler code base. Larger code bases really slow it down... but then again there are better alternatives out there for source control

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If you are familiar with IBM Rational Suite products, RequisitePro will add up due to the synergy between other components. Beyond that, if your business is not structured to an adequate development methodology or lacks the degree of maturity or necessary resources, probably RequisitePro does not add much value. If you work with developers in the requirements analysis, they probably prefer to use an SVN repository.

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• Rational ClearCase is excellent for handling versioning and branching. No other tool I've used has the depth that ClearCase has when it comes to handling complex branching scenarios and identifying where certain versions of particular files are within a particular configuration.
• Rational ClearCase handles parallel development of many dependent applications really well.
• The use of ClearCase Views to switch between projects and configurations is extremely convenient as opposed to the local workstation model of the competitors.

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• Capability to query bugs on multiple criteria and export it to csv for triages.
• Simple and intuitive user experience and clearly planned defect life cycle
• There are other features like assigning the defect to pull request, clearly explaining defect by attaching screenshots, detailed description etc
• If you are using other IBM tools for requirements documentation, this tool integrates very well

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• Extremely buggy.
• Sometimes the repository gets locked for no reason.
• Slow.

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• Performance can be an issue. Make certain the server is sized properly
• There is a large difference in capability of the Thick Client Version compared with the web based version. Make certain each job function has proper access to be able to do what is required of them.
• Learning curve is not too steep, but would suggest having someone with experience setup the repository. Highly suggest getting a contractor to assist to get the repository up and running.

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Most likely as it's one of the powerful tools in the organization. We needed this tool to track all the process related documentation and also to capture signatures.

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Please keep in mind that this all has to do with you you customize the user interface. It becomes very easy to house all of your requirements, but it may and can make life difficult for you if you do not think ahead of how you want the app to work and house your data

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IBM has good support and knowledge base. With the wealth of information on their site and the support desk, we were able to quickly resolve issues. It is smart to build up a COE and a group that manages the software otherwise it is quick to be able to lose the knowledge as team members are assigned different duties

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It was pretty simple.

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If development is centrallized to one location and your company releases hundreds of customized versions of your software per year, then ClearCase is the best tool for managing the complexity of multiple versions of customized software. If your company has globally distributed development, then I'd recommend Team Foundation Server over ClearCase. If your organization uses Agile Methodologies, then I'd recommend TFS with GIT.

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IBM clearquest would the BEST option if you are looking for managing change requests, managing project workflows, generating reports on status of requests. The reason being: cost, cost and cost. It almost handles everything that you would need for your project including bug tracking unless you want something really fancy (like HP QC) with a higher cost that supports a wide variety of needs which you might need to evaluate based on your project needs. For example, if you would be really making use of all those additional features provided by HP Quality Center. To be honest it depends on your project size, the skills of team members and of course budget!

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• Managed code versioning for many years.
• Only one person can edit code at a time - slows processing down.
• IBM is an expensive product to support.

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• IBM Rational ClearQuest has provided a workflow that works without unique software methodology. As a result we deliver complete software products to our clients in a 6 to 8 week development time frame.
• As a result of our highly customized implementation, we have 8 resources supporting IBM Rational ClearQuest. Three of the resources are full time configuration management staff that administer and support the tool set and the other 5 are from the testing group that handle ClearQuest user support issues in addition to their testing duties.

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