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Three Level Architecture of DBMS or Logical DBMS Architecture The logical architecture defines how data in the database is perceived by users. It is not deals with how the da
Problem 1. Create a PL/SQL program to insert data into student table and display the details of the student having Reg.No 1010 Writing a PL/SQL program to Insert data
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
A set of possible data values is called? A set of possible data values is called as domain.
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
Database systems have many opposite efforts ?
To do the division operation R1 ÷ R2, R2 should be a correct subset of R1. In the following example R1 have attributes A and B and R2 have only attribute B so R2 is a correct subse
What are domain constraints? A domain is a set of values that might be assigned to an attribute .all values that appear in a column of a relation must be taken fro
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
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