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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
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
difference between internal schema and external schema in DBMS
Give an example of Object Representation For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci
About Attribute inheritance
HOW TO SOLVE THE LP Problems by simplex method?z=x1+-3x2+2x3
Draw an ER diagram for company''s database schema
Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic
Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
what are the purposes of dbms in details
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