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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
what is view?explain
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Write a query that display ename annual salary and comm from emp table
what do you mean by consistency in rdbms?
What are the Issues when Selecting a Database Issues when Selecting a Database Storage space requirement: A database requires about triple storage space of the actua
Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator. Altern
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Define the concept of Object Diagram An object diagram shows a set of the objects and their relationships with each other at a point of time. In a static view, object diagram
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
What are the typical phases of query processing
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