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Define object-relational systems?
Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Advantages of Observation Methods: Bailey has pointed out four advantages of observation: 1. Superior in Data Collection on Non Verbal Behavior: When a person a opi
At its most essential level the DBMS architecture can be divide into two parts: the back end and the front end. The back end is responsible for managing the physical database an
ERD Diagram of Medical Recruitment Agency?
Explain weak and strong entity sets? Weak and Strong entity sets: A physically powerful entity set has a primary key. All tuples in the group are distinguishable through that k
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Example- Search the salary of employees who are not 'ANALYST' but get a salary below than or equal to any people employed as 'ANALYST'. SELECT EMPNO, ENAME, JOB, SAL FROMEMP
explain equi-join using illustration
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
Normal 0 false false false EN-US X-NONE X-NONE
what are the states of transaction?
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