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Define the terms
i) DDL
ii) DML
DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data definition language.
DML: A data manipulation language is a language that enables users to access or manipulate data as organized by the suitable data model.
why we fregment at all?
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)
Differentiate between various levels of data abstraction? Data Abstraction - Abstraction is the procedure to hide the irrelevant things from the users and represent the rele
growing phase and shrinking phase are disjoint, why ?
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Explain three main attributes of data.
Question: a) There are three concurrency problems, i.e. three types of potential mistake which could occur if concurrency control is not properly enforced in the database syst
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
explain the level architectures of the database management system
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