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What is a homogeneous distributed database?
In homogeneous distributed databases, all sites have the same database management system software, are aware of one another, and agree to cooperate in processing user's requests.
What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it
While sorting field groups we cannot use more than one key field False.
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
Briefly explain the state diagram by taking one example. State Diagram - An object can be given a sequence of input instructions. The state of the object can vary depending u
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
how the string works as keyword?
Define Partial Key and Primary Key A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar o
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
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