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What are the advantages and disadvantages of merging an association into a class?
Advantages:
i) Less number of tables
ii) Faster performance due to the fewer tables to navigate.
Disadvantages:
i) Less design obstinacy
ii) Reduced Extensibility
iii) Increased difficulty
How does the two phase protocol ensure serializability in database schedules? Ans: A transaction is termed to follow the two-phase locking protocol if all locking operations
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Define various ways in which SELECT statement can be used for record selection Technology? SELECT gives you control over a number of aspects for record retrieval: 1) Which
Normal 0 false false false EN-US X-NONE X-NONE
Explain in details about Data Sharing
What are the advantages of by using an index and what are its disadvantages ? In difference, if the search key of a secondary index is not a candidate key, it is not sufficient
project on dbms
What are the ways in which signal can be generated A signal might be generated in many ways such as a Signal is result of particular physical condition. Whenever a process writ
Define two-phase locking protocol. Ans: Two-phase locking is significance in the context of ensuring that schedules are serializable. The two-phase locking protocol defines a p
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