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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
Write the motivations led to development of OO-DBMS? 1. Programmer frustration with RDBMSs. 2. Requirement for special features.
how to prepare a data dictionary for online examination system for certified courses?
Can you help me with the following: Drop statements for all objects in the lab project. Create statements for all objects of the lab project Create indexes for foreign keys Cre
The Proliferation of Object-Oriented Methods The first few years of the 1990s saw blossoming of around fifty various object oriented methods. This proliferation is a sign of g
Define instance and schema? Instance: Collection of data kept in the data base at a particular moment is known as an Instance of the database. Schema: The o
need a DBMS system on any data for assignment.
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
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
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
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