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Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
What is database Trigger? A database trigger is a PL/SQL block that can explained to automatically execute for insert, update, and delete statements against a table. The trigge
Can we delete data element, which is being used by table fields. No we cant delete data element.
Explain ODBC? ODBC - Open DataBase Connectivity (ODBC) enable the integration of SQL along with a general-reasons programming language.
basic structure of xml
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
What is an ER diagram? Why is it used in Database management system (DBMS)?
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
State the data flow diagram of functional model Any action initiated by transition in the state diagram can be extended into an entire data flow diagram in functional model. Th
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