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How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
Describe entity referential integrity and integrity. Give an example of each. Entity Integrity Rule - If there is a attribute A of relation R is a prime attribute of R then A
define anomalies and different types of anomalies with example
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Hi I have got an assignment for making an er diagram for market management software can any budy help me?
What is DML Query Langauge? Data Manipulation Language (DML) - A data manipulation language is a language in which enables users to access or manipulate data as organized throu
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
What are the four main characteristics of the database approach? The four major characteristics of the database approach are: 1. Self-describing nature of a database system. 2.
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