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Welcome to the Important Terms and Definitions MCQs Page

Dive deep into the fascinating world of Important Terms and Definitions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Important Terms and Definitions, a crucial aspect of Data Warehousing and OLAP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Important Terms and Definitions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Data Warehousing and OLAP.

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Important Terms and Definitions MCQs | Page 12 of 14

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Q111.
What does SMP stand for, and what architecture does it utilize for parallel server hardware?

a.

Shared Memory Processing; shared-everything architecture

b.

Symmetric Multiprocessing; shared-everything architecture

c.

Shared Memory Protocol; shared-nothing architecture

d.

Symmetric Multiprocessing; shared-nothing architecture

Discuss
Answer: (b).Symmetric Multiprocessing; shared-everything architecture Explanation:SMP stands for Symmetric Multiprocessing, and it utilizes a shared-everything architecture for parallel server hardware where memory and disks are shared among the processor nodes.
Q112.
What is a Snowflake Schema, and why is it not generally recommended?

a.

A normalized version of the STAR schema; recommended for simplicity

b.

A denormalized version of the STAR schema; recommended for query performance

c.

A normalized version of the STAR schema; not generally recommended because it compromises query performance and simplicity for understanding

d.

A denormalized version of the STAR schema; not generally recommended for simplicity

Discuss
Answer: (c).A normalized version of the STAR schema; not generally recommended because it compromises query performance and simplicity for understanding Explanation:A Snowflake Schema is a normalized version of the STAR schema, and it is not generally recommended because it compromises query performance and simplicity for understanding.
Q113.
What does Sparsity indicate in the context of a data warehouse?

a.

The presence of data in every fact table record

b.

The absence of data in every fact table record

c.

The condition where every fact table record in a dimensional model is not necessarily filled with data

d.

The condition where every fact table record in a dimensional model is filled with data

Discuss
Answer: (c).The condition where every fact table record in a dimensional model is not necessarily filled with data Explanation:Sparsity indicates the condition in the data warehouse in which every fact table record in a dimensional model is not necessarily filled with data.
Q114.
What does SQL stand for, and what role does it play in relational databases?

a.

Standard Query Language; a language for database replication

b.

Structured Query Language; the standard interface for relational databases

c.

Schema Query Language; a language for database schema changes

d.

System Query Language; a language for system-level database operations

Discuss
Answer: (b).Structured Query Language; the standard interface for relational databases Explanation:SQL stands for Structured Query Language, and it has become the standard interface for relational databases.
Q115.
What are Standardized Facts in the context of a family of STARS in data warehousing?

a.

Facts with standard data types

b.

Facts with standardized attributes

c.

Two sets of facts represented in fact tables; standardized if both sets are identical in their attributes or if one set is an exact subset of the other

d.

Facts with standardized values

Discuss
Answer: (c).Two sets of facts represented in fact tables; standardized if both sets are identical in their attributes or if one set is an exact subset of the other Explanation:Standardized Facts in the context of a family of STARS are two sets of facts represented in fact tables. They are said to be standardized if both sets are identical in their attributes or if one set is an exact subset of the other.
Q116.
What is a STAR Schema, and how is it arranged in the dimensional data model?

a.

A schema for database replication; arranged in a star formation

b.

A schema for database schema changes; arranged in a star formation

c.

The arrangement of fact and dimension tables in the dimensional data model; resembling a star formation, with the fact table placed in the middle surrounded by dimension tables

d.

The arrangement of fact and dimension tables in a relational database; resembling a star formation, with the dimension table placed in the middle surrounded by fact tables

Discuss
Answer: (c).The arrangement of fact and dimension tables in the dimensional data model; resembling a star formation, with the fact table placed in the middle surrounded by dimension tables Explanation:A STAR Schema is the arrangement of the collection of fact and dimension tables in the dimensional data model, resembling a star formation, with the fact table placed in the middle surrounded by the dimension tables. Each dimension table is in a one-to-many relationship with the fact table.
Q117.
What is a Stored Procedure, and where is it executed?

a.

A programming language for database management; executed on the client side

b.

A software program stored in the database itself; executed on the client side

c.

A software program stored in the database itself; executed on the server based on stipulated conditions

d.

A programming language for database management; executed on the server based on stipulated conditions

Discuss
Answer: (c).A software program stored in the database itself; executed on the server based on stipulated conditions Explanation:A Stored Procedure is a software program stored in the database itself and is executed on the server based on stipulated conditions.
Q118.
What is a Subschema in the context of a database?

a.

A collection of internal database views

b.

A collection of external user views of a database

c.

A method for database schema changes

d.

A system for database replication

Discuss
Answer: (b).A collection of external user views of a database Explanation:A Subschema is a collection of external user views of a database.
Q119.
What is the term commonly applied to a data mart with conformed dimensions and standardized facts?

a.

Superdata Mart

b.

Supermart

c.

Conformed Mart

d.

Standardized Mart

Discuss
Answer: (b).Supermart Explanation:The term commonly applied to a data mart with conformed dimensions and standardized facts is Supermart.
Q120.
What is a Surrogate Key in the dimensional model, and how is it used?

a.

A primary key in a fact table; becomes a foreign key in a dimension table

b.

An artificial key field in a dimension table; usually with system-assigned sequential numbers; used to link a dimension table to the fact table

c.

A primary key in a dimension table; becomes a foreign key in a fact table

d.

An artificial key field in a fact table; used to link a fact table to a dimension table

Discuss
Answer: (b).An artificial key field in a dimension table; usually with system-assigned sequential numbers; used to link a dimension table to the fact table Explanation:A Surrogate Key in the dimensional model is an artificial key field, usually with system-assigned sequential numbers, used in the dimensional model to link a dimension table to the fact table. In a dimension table, the surrogate key is the primary key which becomes a foreign key in the fact table.
Page 12 of 14

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