To delete a particular column in a relation which command, Database Management System

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To delete a particular column in a relation which command is used ?

To delete a particular column in a relation ALTER command is used.

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Issues relating to the design of the physical database files, The issues re...

The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons

Differentiate between horizontal and mixed partitioning, Question: In r...

Question: In relation to distributed database answer the following questions: (i) Give a brief definition of distributed database. Support your answer with an appropriate di

Two approaches to store relations in distributed database, What are the two...

What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation

Relationship between security and integrity, Relationship between Security ...

Relationship between Security and Integrity: Database security usually refers to access, while database integrity refers to avoidance of accidental loss of consistency. But usually

Hashing.., various techniques of hashing?

various techniques of hashing?

Describe integrity and security, Describe integrity and security? a) ...

Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo

List the string operations supported by sql, List the string operations sup...

List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas

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note on hashing technique

Design of a database, Ask questioYou are the database administrator in a un...

Ask questioYou are the database administrator in a university. You have been tasked to come up with a new database for the University. Using the stages in Database Life Cycle come

The concurrent transactions, The Concurrent Transactions Almost every ...

The Concurrent Transactions Almost every commercial DBMS support multi-user environment. Therefore, allowing multiple transactions to proceed concurrently. The DBMS must make

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