IT Flashcards

1
Q

enterprise resource planning (ERP) systems

A

The online analytical processing system (OLAP) incorporates data warehouse and data mining capabilities within the ERP.
The online transaction processing system (OLTP) records the day-to-day operational transactions and enhances the visibility of these transactions throughout the system. It is primarily the OLAP and not the OLTP, that provides an integrated view of transactions in all parts of the system. The OLTP is primary concerned with collecting data (and not analyzing it) across the organization.

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2
Q

ERP

A

It is a primary objective of an enterprise resource planning system to integrate data from all aspects of an organization’s activities into a centralized data repository. Hence, this is the best answer to the question.

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3
Q

OLAP

A

On-line analytical processing systems (OLAPs) are an increasingly important multidimensional analytical tool. An OLAP is a modification and expansion of an on-line transaction processing system to provide the capabilities and functionalities identified in this question.

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4
Q

In DRP, top priority is given to which activities

A

mission critical

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5
Q

redundancy

A

This is the best answer since system redundancy is essential to ensuring business continuit

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6
Q

Data control clerk

A

This is the best answer since system redundancy is essential to ensuring business continuit

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7
Q

Data conversion happens at this stage

A

Implimentation (the process of moving from old to new happens at this stage)

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8
Q

At this stage, we purchase hardware:

A

design and development

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9
Q

The requirements definition document is signed at this stage

A

Analysis

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10
Q

Change Control

A

The practice of authorizing changes, approving tests results, and copying developmental programs to a production library is program change control

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11
Q

Validity

A

A validity check compares the value entered in a field to a list of valid data values. An error message is displayed if the value is not found on the list

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12
Q

Reasonableness

A

Reasonableness checks look at the values in two related fields to ensure that they make sense as a unit

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13
Q

An audit trail is considered what type of control

A

Processing

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14
Q

Electronic data interchange

A

Electronic data interchange (EDI) allows companies to place orders with their suppliers electronically. This reduces the costs associated with producing, distributing, and managing the paperwork associated with a traditional ordering system and dramatically reduces the amount of time required to receive and process the order

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15
Q

Decision support system

A

Decision support systems (DSSs) provide information to mid- and upper-level management to assist them in managing non-routine problems and in long-range planning.

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16
Q

Data mart

A

A data mart is more specialized than a data warehouse. The data mart is often constructed to support specific needs of subunits of an organization.

17
Q

Datawarehousing and pattern recognition

A

A data warehouse is a database archive of an organization’s operational transactions (sales, purchases, production, payroll, etc.) over a period of years; external data that might be correlated with these transactions, such as economic indicators, stock prices, and exchange rates, are also included.
Pattern recognition is a major component of data mining software: data mining is the process of performing statistical analysis and automatically searching for patterns in large volumes of data

18
Q

Flat file system

A

while flat file systems do contain program independence, this is seen as a disadvantage not an advantage. This is because the program independence of flat file systems means that multiple programs must be used to read, access and process the data. Statement II is incorrect because flat file systems contain a high degree of data redundancy.

19
Q

Data Definition Language

A

Data definition language (DDL) is used to create tables and fields of information within the fields.

20
Q

Data control language

A

This answer is correct because data control language is composed of commands used to control a database, including controlling which users have various privileges (e.g., who is able to read from and write to various portions of the database).