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An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
ERD Diagram of Medical Recruitment Agency?
What are the ways in which the variable-length records arise in database systems? Storage of many record types in a file. Record types that permit variable lengths for one o
comparison of oracle RDBMS with MySQL
what is cascading? what is rollback cascading? please explain in detail
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
How Relational Calculus is different from Relational Algebra? What do understand by TRC queries and DRC queries? Ans: Relational calculus contain two calculi, the tuple relati
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
Multi-list file Organisation Multi-list file organisation is a multi-index linked file organisation. A linked file organisation is a logical organisation where physical orderin
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