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How to create a table from existing table?
Create table as
e.g, To create a new table ‘N_emp' with employee names and their identification numbers only from employee table, statement is to create table N_emp as select empname, empid from employee
a set of possible data value of an attribute is called??
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
distributed quey processing
I am doing research in this area, especially in sime join and join efficacy when several relations have been queried. Relations located in different sites. I need something like n
explain ANSI SPARC architecture
Why a report generator is used ? Report generator is used for print files on paper.
Give an example of multiple inheritance. One example of multiple inheritance is a committee for students affair which include faculty and administrative staff member.
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
Equi Join: A join in which the joining condition is based on equality among values in the common columns. Common columns show (redundantly) in the result table. Let us Consider th
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
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