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What are the various properties of Relational tables?
Relational tables have 6 properties:
1. Each row is unique.
2. Column values are of the same kind.
3. Values are atomic.
4. Sequence of columns is insignificant.
5. Sequence of rows is insignificant.
6. Each column should have a unique name.
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
What is an ERD?
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
what is data link layer
Step 1 . Using Oracle, create the tables identified in the preferred solution for Assignment 2. Technicians (ZipCode, TechnicianID, FirstName, LastName, Street, City, State, Home
List and also explain the dissimilar stages of DDLC ?
What are the functions of an accumulator? The accumulator is the register associated with the ALU operations and sometimes I/O operations. It is an integral part of ALU. It hol
deffine class&object
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
Relationship between Security and Integrity: Database security usually refers to access, while database integrity refers to avoidance of accidental loss of consistency. But usually
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