NECO DATA PROCESSING ANSWERS 2020

DATA-PROCESSING-Obj!

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(5ai)
(i)videotapes
(ii)DVDs

(5aii)
-In the banking sector-
(i)ICT helps in the banking and educational sectors to improve the efficiency and of services offered to customers, and enhance business processes,
(ii)ICT facilities managerial decision making, and workgroup collaborations which strengthen their competitive positions in rapidly changing and emerging economies

-In the educational sector-
(i)The use of ICT in education has made it possible for tutors to teach students much more easily. By using audio and visual materials, students can develop a better understanding of the topics being taught.
(ii) With ICT, It is possible to keep student records in a more systematic and secure manner using technology. Unlike in the past when records used to be kept manually

(5bi)
Data integrity is the maintenance of, and the assurance of, the accuracy and consistency of data over its entire life-cycle, and is a critical aspect to the design, implementation and usage of any system which stores, processes, or retrieves data.

(5bii)
(i)Human error, whether malicious or unintentional.
(ii)Transfer errors, including unintended alterations or data compromise during transfer from one device to another.
(iii)Bugs, viruses/malware, hacking, and other cyber threats.
(iv)Compromised hardware, such as a device or disk crash.

(1ai)
D ata base management system can be defined as computer software that constructs, organises and maintains the data in the database. Once data has been entered into the database,the DBMS allows the users to arrange the data in useful formats such as table label, form or report

(1aii)
(i)Weight
(ii)Costs
(iii)Prices
(iv)Number of items sold
(v)Employees name

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Field: A field can be viewed as a single unit of data contained in a record describing a particular such as name,age,sex and address

(1bii)
Record: A record also known as tuple is a collection of related fields ( data items) eg Matric no., Name address etc. A record is a description of an events

(1biii)
Primary key: This is a selected field in a table that uniquely determines the record in a file. Account number is the primary key for bank customer file, matriculation number is the primary key for student file etc