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Hierarchical model is also known by?
A hierarchical model is also known as a Tree structure.
Explain Relational model and their use in DBMS? Relational Model - The relational model was first introduced through E.F. Codd of the IBM Research in the year of 1970. The mode
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
What is the disadvantage of a call by reference? During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to alters to th
1. Determine the set of minimal functional dependencies for the following data. The local bakery, Happy Cakes, needs your help designing a database that will support a kiosk in
Define the Two Phase Locking Protocol This is a protocol that is used to make sure serializability of transactions. This protocol needs that every transaction issue lock and u
a project based on normalization with first, second and third normalization. There need to be a diagram also
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
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