How do you modify a database?

Question

Key Points Use CREATE and DROP to create and delete tables. Use INSERT to add data. Use UPDATE to modify existing data. Use DELETE to remove data. It is simpler and safer to modify data when every record has a unique primary key. Do not create dangling references by deleting records that other records refer to.

How do you modify data in a database?

To modify data involves changing the contents of tables.1Modify data in your database.2Delete rows.3Insert rows.4Update rows.5Privileges on a database and on its objects.6Data integrity.7Interrupted modifications.8Backups and logs with IBM Informix database servers.

Can a database be modified?

You can use either SQL statements against an existing table or ObjectScript operations on the corresponding persistent class to modify the contents of an InterSystems IRIS® data platform database. You cannot modify a persistent class (table) that is defined as READONLY.

How do I modify a SQL database?

To modify table data through a view1In Object Explorer, expand the database that contains the view and then expand Views.2Right-click the view and select Edit Top 200 Rows.3You may need to modify the SELECT statement in the SQL pane to return the rows to be modified.