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Explain degree of relation?
Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
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;
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Multiple-mode locks : It offers two locks: exclusive locks and shared locks. But why do we require these two locks? There are a lot of transactions in the database system that neve
various techniques of hashing?
database help
What is a Data Flow Diagram? Data Flow Diagram: A data flow diagram is the graph that shows flow of data values from their sources in objects in the course of processes whic
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
define attribute inheritance with example?
Objectives After Reading this part, you should be able to: Explain the term CONCURRENCY; Describe the term transaction and concurrent transactions; Talk about co
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
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