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Sql Server Interview question #8 What is collation? Solution Collation refers to a set of rules that determines how data is sorted and compared. Character data is sorted using rules that define the correct character sequence with options for specifying case sensitivity, accent marks, Kana character types, and character width. Thanks for reading this […]
Scenario When conducting performance testing and tuning on a new system, most of the time a number of options are outlined to potentially correct the performance problem. To determine the best overall solution, each option is tested and the results are recorded. As lessons are learned options may be combine for a better end result […]
Sql Interview Question What is a primary key?
Scenario You may have been in a scenario where you needed to quickly generate a script to drop and then subsequently re-create all of the foreign keys in a database (or in a specific schema, or matching a specific naming scheme). In some situations you can simply disable and re-enable the constraints, which isn’t all […]
Sql Interview Question What are pessimistic and optimistic locks?
Scenario I have to restore a production database to a development database on a weekly basis in order to refresh the environment. Currently, I’m doing this process manually. Is there any way to script this out so it can be automated? Check out this tip to learn more. Solution If you take full backups […]
Sql Interview Question What is OLTP (Online Transaction Processing)?
Scenario Just like every other company, we need to have our queries run as fast as possible for our users to have the best experience possible with our application. One of the core components of our application is to search across a number of columns in a table. We have been trying to accomplish this […]
Sql Interview Question What is the difference between an update lock and exclusive lock?
Scenario I faced a situation where archived tables were created in the production database and now there was a requirement to move them as the database was growing. These archival tables were being used by several jobs and also in the application code. Moving them was demanding and also a very complicated process. I wanted […]
