Answer the following questions.
1. How does DBMS help deal with data inconsistency?
2. What is an RDBMS?
3. What does the primary key do?
class 10 Database Management system.
Answers
Answered by
6
Answer:
A software system used to maintain relational datavbases is a reational databases management system. ( RDBMS)
Answered by
3
1) A DBMS CAN REDUCE DATA REDUNDANCY AND INCONSISTENCY BY MINIMIZING INSULATED FILES IN WHICH THE SAME DATA ARE REPEATED. THE DBMS UNCOUPLES PROGRAMS AND DATA, ENABLING DATA TO STAND ON THEIR OWN.
3) A PRIMARY KEY IS A COLUMN THAT EVERY TABLE IN YOUR DATABASE IS GOING TO NEED. THE GOAL OF A PRIMARY KEY IS TO FORCE EVERY ROW TO BE UNIQUELY IDENTIFIABLE. YOU CAN ESSENTIALLY THINK OF A PRIMARY KEY AS THE COMBINATION OF THE NOTNULL CONSTRAINT AND OF THE UNIQUE CONSTRAINT AND YOU CAN ONLY HAVE ONE PER TABLE.
HOPE IT HELP YOU........
Similar questions