Case Statements In Sql Server. We explored the sql server case statement and also saw the case. If no conditions are true, it returns the value in the else clause.

In many cases, if the same simple case expression will be used repeatedly or with a large number of possible matches, it may be better to use a join. Here, we specified multiple conditions. The case_expression is compared with value, in order starting from the first value, i.e., value_1.

Use Case Diagram For Railway Reservation. Draw usecase diagram for railway reservation system. Creately diagrams can be exported and added to word, ppt (powerpoint), excel, visio or any other document.

The use case diagrams depict the system’s main components as well as the flow of information between them. The slideshare family just got bigger. A use is a description of a system‟s behavior as it responds to a request that originates from outside of that system.