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cardnality ratio for humanresource mangement system
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
A Structure of a dependency diagram
triggering
courier company er-diagram
a) Suppose we updated the catalog tables in real time, that is, after every update, insert, or delete SQL statement were executed-rather than only running RUNSTATS once every few
Haw does it work one database application
Atomicity : Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions
Event Occurrence of a process is called event. In other words, the object can receive many input instructions. The changes which occur due to these instructions are known as e
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
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