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NECO 2023 DATA PROCESSING VERIFIED ANSWER
*2033 NECO DATA PROCESSING ANSWERS*
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*DATA PROCESSING SOLUTION*
6. a) Definitions:
i) Normal Form: In the context of databases, a normal form refers to a specific level of data organization that ensures data integrity and reduces redundancy. It’s a set of rules that define how data should be structured to minimize duplication and anomalies in a relational database.
ii) Examples of graphic packages:
1) Adobe Photoshop
2) CorelDRAW
3) GIMP (GNU Image Manipulation Program)
4) Canva
b) Uses of ICT (Information and Communication Technology) in everyday life:
1) Communication: ICT enables instant communication through tools like smartphones, social media, email, and messaging apps, allowing people to stay connected regardless of their location.
2) Information Access: ICT provides access to a vast amount of information and knowledge through the internet, enabling learning, research, and staying informed about current events.
c) Differences between file and folder:
1) Nature: A file is a digital container that holds data, such as documents, images, or programs. A folder is a virtual container that holds multiple files and other folders, organizing them into a hierarchical structure.
2) Function: Files store specific types of data or information, while folders are used to group and organize related files in a systematic manner for easier management and retrieval.
5. a) Definitions:
i) Computer Ethics: Computer ethics refers to the moral principles and guidelines that govern the behavior of individuals and organizations in the use of computers and technology. It involves making ethical decisions and addressing ethical dilemmas related to technology and its impact on society.
ii) Disadvantages of the Internet:
1) Security Risks: The internet is susceptible to various security threats such as hacking, malware, phishing, and identity theft.
2) Privacy Concerns: The vast amount of personal information shared online raises privacy concerns, as data can be collected, tracked, and exploited without user consent.
b) Difference between Primary Index and Secondary Index:
The primary index is usually based on the primary key of a table and determines the physical order of the records on the storage medium. It directly corresponds to the storage location of records.
A secondary index, on the other hand, is an additional index that provides an alternate path to access data. It’s created based on a non-primary key column and doesn’t determine the physical order of records. It allows for efficient access to specific subsets of data.
c) loading….
3. (a) Definitions:
i) Parallel Database: A parallel database is a type of database system where data is distributed across multiple processors or servers, allowing for simultaneous processing of queries and transactions to improve performance and scalability.
ii) Distributed Database: A distributed database is a collection of interconnected databases that are geographically dispersed and work together as a single unified database. Data is stored in multiple locations and can be accessed and managed as if it were a single database.
Bi) Examples of presentation packages:
i) Microsoft PowerPoint
ii) Apple Keynote
ii) Three uses of a database management system:
1) Data Storage and Retrieval: A DBMS allows for efficient storage, retrieval, and organization of data, enabling users to quickly access the information they need.
2) Data Analysis: DBMS tools enable users to perform complex queries and generate reports, facilitating data analysis for decision-making.
3) Data Security and Integrity: A DBMS provides mechanisms to control access, enforce data integrity rules, and ensure data security, reducing the risk of unauthorized access or data corruption.
C) Four examples of input devices:
1) Keyboard
2) Mouse
3) Touchscreen
4) Scanner
QUESTIONS 2
(2a)
Primary key refers to a unique identifier for each record in a table. It is a column or a combination of columns that uniquely identifies each row in a table. The primary key ensures that each row in a table is unique.
(2bi)
Internet Service Provider (ISP): An Internet service provider (ISP) is a company that provides customers with access to the Internet. ISPs provide services such as connection to the Internet, email accounts, web hosting, and other related services.
(2bii)
Network Administrator: A network administrator is responsible for the day-to-day management and maintenance of a computer network. This includes setting up and configuring new hardware and software, troubleshooting network issues, monitoring network performance, and maintaining network security.
(2c)
(i) Ctrl+A: to selects all content in the active window or document.
(ii) Alt+Shift+Tab: to Cycle through open windows.
(iii) Alt+F4: to Close the current window or application.
(iv) Shift+E: to Change the character case of selected text to all upper case
QUESTIONS 1
(1a)
A data model is a conceptual representation of data, their relationships, and properties, used to design a database system. It defines the structure, organization, and format of the data that is stored, processed, and accessed within a database system.
(1bi)
Worksheet: A worksheet is an electronic document used to store and organize data in a structured manner on a single page. It consists of columns and rows which together make up a grid of cells. Each cell can contain a single piece of data.
WHILE
Workbook: A workbook is a collection of worksheets that share a common theme or purpose. All the worksheets in a workbook are stored in a single file and each worksheet can be accessed independently and edited without affecting the other worksheets.
(1bii)
Cell: A cell is a single box in a worksheet that contains either a value or a formula. Cells are organized into columns and rows and are referenced by their column and row labels.
WHILE
Active Cell: The active cell is the cell that is currently selected in a worksheet. The active cell is highlighted and all actions performed in the worksheet will be applied to this cell until another cell is selected.
(1ci)
Bookmark: A bookmark is a feature in web browsers that allows users to quickly save and access their favorite websites. When a website is bookmarked, the browser will remember the URL (web address) so that it can be accessed easily in the future.
(1cii)
Bitmap: A bitmap is a type of image format used to store digital images. It is composed of pixels (dots) that each have different colors or shades of gray. It is commonly used for digitized photographs and other complex images
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Posted by admin on 8th August 2023.
Tags: Neco 2023 data processing answer, Neco 2023 data processing expo, Neco data processing 2023, Neco data processing 2023 expo
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