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What is Asterisk in SQL?
Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
What is the full form of DDL? DDL is stand for Data Definition Language.
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.
#explain five disadvantages of a dbms..
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Rules Of Data Normalisation Let us now summarise Normalisation with the help of various clean rules. The following are the necessary rules for the Normalisation process: 1.
what is stracture of dabms
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
explain participation constraints with examples
(a) Differentiate between information and data . (b) List and briefly explain five potential benefits of the database approach compared to conventional file systems. (c) Diff
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