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courier company er-diagram
What is object containment? References among objects can be used to model dissimilar real-world concepts.
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
what are the limitations of dbms?
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
What is the main goal of RAID technology? Describe the levels 1 through 5. RAID stands for Redundant Array of Inexpensive (or sometimes "Independent")Disks. RAID is a met
WHAT IS MEANT BY E-R MODEL
What are the states of transaction? The states of transaction are:- a) Active b) Partially committed c) Failed d) Aborted e )Committed f) Terminated
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