Transaction Management and Concurrency control
Transaction refers to an action or series of actions carried out by a single user or
application program which accesses or changes the contents of the database.
It is a logical unit of work on the
This lab is meant to enhance the introductory queries we tackled in both lab 1 and 2. We shall
look at relational algebra operations, some advanced queries and joins.
Just incase you do not have the tables and the necessary data, here you go.
- To c
The SQL ALTER TABLE command is used to add, delete, or modify columns in an existing
You would also use ALTER TABLE command to add and drop various constraints on a an
The basic syntax of ALTER TABLE to add a new column in a