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#question. acompani datdbase needs to store information about employees (identified by a social security number,with salary and phone as attributes) and departments (identified by
explain various steps uses in evaluation and maintenance of MIS.
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
I need help for my Uni assignments
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
What is an Index? An index is a small table having only two columns. The first column has a copy of the primary or candidate key of a table and the second column having a set o
Relations create the database. They must satisfy various properties, like no duplicate tuples, no ordering of tuples, and atomic attributes, etc. Relations that satisfy these basic
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
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