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A set of possible data values is called?
A set of possible data values is called as domain.
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
give some example real-life situations where DBMS are most suiitabe
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
What is conceptual model ? A conceptual model is a independent of both hardware and software.
A field-groups statement or an insert statement reverses storage space and transfers values. False.
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
We require an advanced system for a Sports Centre, you are concerned only with representing the data discussed below about bookings and members. (The complete system may contain ot
Isolation or Independence : The isolation property shows that the updates of a transaction should not be visible till they are committed. Isolation assurance that the progresses of
What Count function return in SQL? Count function within SQL returns the number of values. (Count function counts all the not null values in the exact column. If we need to cou
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