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Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c
What is the meaning of Data Independence ?
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
Sequential File Organisation The most necessary way to organise the collection of records in a file is to use sequential Organisation. Records of the file are stored in series
Should I select imaging software that allows changes? An imaging system should not give features to edit or alter images. Images generally are formed as safe and secure records
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
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