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Explain the Dynamic Hashing Techniques
There are two methods in it: extendible hashing - stores an access structure in addition to the file, and therefore is somewhat identical to indexing. The major difference is that the access structure is based upon the values that the result after application of the hash functions to the search field. The second one is, linear hashing - does not need additional access structures.
how to design a bakery business in data base
a brief definition
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
To eliminate duplicate rows (distinct operator) Example: SELECT DISTINCT DEPTNO FROM EMP;
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
Define null values. In some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for a certain entity. In the
What kind of advantages to copying records from one table to another? -) When an algorithm that modifies a table is used after that it's safer to work with the copy -) When
i would like to ask if you will do assignment of database number of words 1500 and how much
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
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