Question

Short answer questions (I).
1. What do you mean by referential integrity? Take example to explain.
2. How can you change the field properties of a table?
3. What is a query in a DBMS? What language has been developed to express queries?
4. Give example of a simple SQL query and explain how it works
5. What is the use of forms? Give any one way to create forms.
ANSWER FAST ​

Answer 1

Explanation:

ans 1

Referential integrity refers to the accuracy and consistency of data within a relationship. In relationships, data is linked between two or more tables. ... So, referential integrity requires that, whenever a foreign key value is used it must reference a valid, existing primary key in the parent table.May 28, 2016