Constraint:
Constraints enforce limits to the data or type of data that can be inserted/updated/deleted
from a table. The whole purpose of constraints is to maintain the data
integrity during an update/delete/insert into a table. In this tutorial we will
learn several types of constraints that can be created in RDBMS.
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Figure: Expanded structure of ISA computer (i) Memory buffer register (MBR): Contains a word to be stored in memory or sen...
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