Tag: virtual column

Views in the Oracle database have several uses. You can use them to provide a view of data in different tables as a single object to query. You can …

Database development in the Oracle Database is crucial for creating well balanced  multi tier applications. This presentation describes a number of useful facilities and application architecture considerations around the …

The business rule states: Only one entry is allowed per ID and per day and the time should be recorded. The table involved (simplified for the blog post) SQL> …