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What is an entity relationship model?
The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An entity is a thing or object in the real world that is distinguishable from other objects
what is relationship inheritance and attribute inheritance
what is stracture of dabms
why are older data base model are being replaced by new data model
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
Design a gennalization and specialization hierarchy for an automobile sales company
Question 1 Discuss the classification of DBMS based on location of database Question 2 Explain with examples different SQL commands used for creating and deleting relations.
Java program for horrizontal fragmentation in distributed database
wrie a report on whether a BSc n information systems develops the skills required by employers in Database administration
Update or Modify operation alters the existing values. If these operations alter the value that is the foreign key also, the only check need is the similar as that of the Insert op
CREATE TABLE prodtrans ( pno number (4) ptype char (1) CHECK (ptype in ('I','R','S')), qty number (5) FOREIGN KEY pno REFERENCES product (pno) ON DELETE CASCADE);
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