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Give the general form of SQL query?
Select A1, A2............., An
From R1, R2..............., Rm
Where P
What is primary Key Explain? Primary Key - Primary key is one of the candidate keys. It should be selected such in which its attribute values are never, or very rarely, chang
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
Eliminate Repeating Groups The problem is, "Find out the list of employees, who knows DB2". For this problem we require to perform an awkward scan of the list looking for re
(a) Why did SAP introduce the extended star schema?
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the
project on dbms
Explain entity integrity and referential integrity rules within relational model. Show how these are realized in SQL? Entity Integrity Rule - No primary key value could be nu
Do NOT use the timestamp type. Use separate date and time data types only. Figure out how to define an SQL insert statement that uses built-in SQL (or MySQL) functions to define
a brief definition
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