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What is the meaning of Data independence?
Data independence means a programs that are not dependent on the physical attributes of data and a programs that are not dependent on the logical attributes of data.
Using Literal Character String Example: To print IS A as one string with column name employee SELECT ENAME || ' IS A ' || JOB AS "EMPLOYEE" FROM EMP;
Data Mining 1. What is data mining? Write Data Mining applications. 2. Explain OLAP? Write the benefits of OLAP. 3. What are the key features of a Data Warehouse? 4. W
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
explain exhausitively the problems associated with er diagrams with ellustrations
In which format database schema is written ? Data base schema is written in the DDL format.
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
Special comparison operator used in where Clause a. between. ...and...It gives range among two values (inclusive) Example: SELECT ENAME, SAL FROM EMP WHERE SAL BETWE
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
Express the subsequent query in SQL assumes which the data is stored within EMPLOYEE table with relevant fields (i) Display name, job, salary, and hire date of employee who are
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
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