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Explain heap file with advantages? Heap File is an unordered set or a group of records, stored on a set of pages. This class gives basic support for inserting, updating, select
State the meaning of Object Representation The term object representation means "to represent object with the help of objects model symbols". Implementing objects is too simp
If the insertion violates one or more constraints, then two alternatives are available: Default option: - Insertion can be discarded and the reason of refusal can also be ex
Consider the relations described below: PHYSICIAN (regno, name, telno, city) PATIENT (pname, street, city) VISIT (pname, regno, date_of_visit, fee) Where the regno and pname ide
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
INSERT INTO command : Values can be inserted for all columns or for the selected columns Values can be given by sub query. In place of values parameter substitution
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
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
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
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