Database Administration Questions

High level data models provide the concepts that are close to the way many users perceive data

This is only possible when that doctor is boy's mother.

An excise or excise tax or excise duty is a type of tax charged on goods produced within the country (as opposed to customs duties, charged on goods from outside the country). It is a tax on the production of a good. This tax is now known as the Central Value Added Tax (CENVAT).

The relationship where both the participating entities belong to same entity type is called Recursive relationship

Government regulation protects constitutional rights, safety, and fairness.

Hence, Government regulation is intended to discourage producers from taking harmful actions.

7 C in a R represents 7 Colours in a Rainbow.

Immutable classes are Java classes whose objects can not be modified once created. Any modification in Immutable object result in new object. For example is String is immutable in Java. Mostly Immutable are also final in Java, in order to prevent sub class from overriding methods in Java which can compromise Immutability. You can achieve same functionality by making member as non final but private and not modifying them except in constructor.

A search engines are a software systems used for searching about any information in the world on the web.

Search engines like Google, Bing, Internet explorer, Yahoo, etc... functions by providing relevant search results for the keywords user searches. 

Hence, the given statement is TRUE.