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What does data dictionary is a special file contains ?
The data dictionary is a special file contain The name of all fields in all files.The width of all fields in all files and The data type of all fields in all files.
Determine the Objectives of object oriented design provide an overview of object oriented design; partitioning system to subsystems; describe how a software desig
it can be possible to create any table without primary key
What is NULL? Give an example to described testing for NULL in SQL? The NULL SQL keyword is used to represent either a missing value or a value which is not applicable in a re
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
How is Oracle used in PL/SQL? Define the features of process and how they are defined? PL/SQL - PL/SQL is Oracle's procedural language (PL) superset of the Structured
Whst is logical schema ? Logical schema is the entire database.
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification: The practice emplo
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Event Occurrence of a process is called event. In other words, the object can receive many input instructions. The changes which occur due to these instructions are known as e
aggregation
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