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After going by the database architecture, let us now dwell on an important query: how is the data organised in a database? There are a lot of basic structures that exist in a database system. They are known as the database models. A database model defines
Define Deadlock avoidance These protocols as well ensure that the system will never enter a deadlock state although the way it is done is different from deadlock prevention. I
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
What is recursive closure? Why is it not possible to describe this operation in relational algebra? Recursive closure is applied to recursive relationship. An instance of rec
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Explain the cartesian product in Database Management System
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Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
The Maximum no of key fields that can be used in a header is?? 50
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Secondary Indexes Let consider the student database and its clustering index and primary (only one will be applicable at a time). Now consider the state when the database is to
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