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What is a primary index?
A primary index is an index whose search key also explains the sequential order of the file.
During the deletion of a tuple two cases can happen: Deletion of tuple in relation having the foreign key: In this type of case simply delete the desired tuple. For example, in
Describe the difference between a one-to-many and a many-to-many relationship. Which logical data structures comprise one-to-many and which comprise many-to-many relationship?
Modular growth: In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat
Which is a legal expression in SQL? SELECT NAME FROM EMPLOYEE is a legal expression in SQL.
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
explain normalization,and give the examples 1NF,2NF,3NF,BCNF.AND FUNCTIONAL DEPANDENACY AND DECOMPOSITION TECHNIQUES.
Three Level Architecture of DBMS or Logical DBMS Architecture The logical architecture defines how data in the database is perceived by users. It is not deals with how the da
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
#queDefine a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pic
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
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