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What is Trigger? A trigger is a SQL procedure that initiates an action when an event (INSERT, DELETE or UPDATE) occurs. Triggers are kept in and managed by the DBMS. Triggers a
Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc
Differance between DDL and SDL? DDL and SDL - The data definition language (DDL) is used through DBA and database designers to describe internal schema, conceptual schema, and
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
what is specialization?
Data Redundancy -A lot of information is being repeated in the relation. For instance, the information that MCS-014 is named SSAD is repetitive, address of Rahul is "D- 27, Main ro
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
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
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