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What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is: If R has m tuples and S has n tuples then maximum siz
Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro
Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
Example- Search the salary of employees who are not 'ANALYST' but get a salary below than or equal to any people employed as 'ANALYST'. SELECT EMPNO, ENAME, JOB, SAL FROMEMP
What is the full form of DDL? DDL is stand for Data Definition Language.
why are older data models are being replaced by new data models
What is the max. no. Of structures that can be included in a table or structure. Nine.
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
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