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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.
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
what do you mean by primary key constraint?
Funky Festivals Specification Funky Festivals organise music festivals which take place at various venues throughout the UK. A venue needs to be booked before a Festival can t
how to solve the C type problems?
Scenario 1: Power goes out after the first instruction. What happens?
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
Explain the Strategy of Database Planning ?
What are the two distinct aspects to the implementation of associations? i) It is required to define data declarations which will enable details of actual links to be stored. I
For every n-ary relationship type R where n>2, we make a new table S to represent R. We contain as foreign key attributes in s the primary keys of the relations that show the parti
Authorisation Authorisation is the culmination of the administrative policies of the organisation. As the name shows, authorisation is a set of rules that can be used to verif
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