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Briefly describe the different kinds of users of a DBMS.
Ans: Different sorts of DBMS users are:
(a) Software Engineers: These are the people accountable for developing application programs by using DBMS.
(b) End users: These are the people whose jobs need access to the database for querying, updating, and producing reports.
(c) Database Administrator: They are accountable for authorizing access to the database, coordinating and monitoring its use.
(d) Database designers: They are accountable for identifying data to be stored in the database.
What is foreign key? Foreign Key - Let there are two relations in tables R and S. Any candidate key of the relation R that is referred in the relation S is known as the forei
give some example real life situation where DBMS are most suitable
Information about films holds information about movies, stars and studios. Movies have a title, year of production, length and the film type. Stars have a name and address. Studi
The dataset " CFOLYMPICS.XLS " contains the observations used in the above article. The definitions of the variables are also included in this spreadsheet. However, for the purpo
assignment
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
Describe multi key files
Candidate Key: In a relation R, a candidate key for R is a subset of the set of attributes of R, which have the differnt two properties: (1) Uniqueness: N
Problem: A DBMS built for Online Transaction Processing (OLTP) is usually regarded as unsuitable for data warehousing. Each system is designed with a different set of requireme
Define Thomas write rule Thomas' write rule: The Thomas' write rule is a modification of timestamp-ordering protocol for concurrency control. Assume that transaction T i issue
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