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DATA MODEL 1-2_SS2 NOTES (DATA PROCESSING SS2)

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  DATA MODEL MEANING AND TYPES OF DATA MODELS A model is like a blueprint of a more complex real-world object or event. A data model is a picture or description which shows how data is to be arranged to serve a specific purpose. A data model defines how data is connected to each other and how they are processed and stored inside the system. A data model documents and organizes data, how it is stored and accessed, and the relationships among different parts of data. TYPES OF DATA MODEL 1 .  Flat file model : A flat data is a type of database that stores data in a single table. Flat file databases are generally in plain-text form, where each line holds only one record. The fields in the record are separated using delimiters such as tabs and commas  2.  Hierarchical model : In this model, data is organised into a tree like structure. The data is stored as records which are connected to one another through links. In a hierarchical model, each child record has only one parent, whereas each
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THE INTERNET II - DEFINITION OF TERMS, BENEFITS OF THE INTERNET (SS3 NOTES)

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  THE INTERNET II   DEFINITION OF TERMS, AND BENEFITS OF THE INTERNET Definition of Internet Internet is a worldwide network of computers that share information. It is also defined as a global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. Internet Definition of Terms 1. Cyber café: An internet café or cyber café is a place which provides internet access to the public, usually for a fee. 2. Cyberspace: It is the electronic medium of computer networks, in which online communication takes place. 3. Download: To transfer a file from a remote computer to a local computer. In other words, it means to transfer a file from a web server to a web client. 4. Upload: Transfer a file from a local computer to a remote computer. In other words, it means to transfer a file from a web client to a web server. 5. E-mail is mail that's electronically transmitted by your computer. 6. File Transfer Protocol (FTP) is the standard method for dow
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BASIC PROGRAMMING II (ADVANCED - BUILT-IN FUNCTIONS) _ SS3 NOTES

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 BASIC BUILT-IN FUNCTIONS A function is a structure that simplifies a complex operation into a single step. BASIC built-in functions are predefined functions that perform a wide range of operations. BASIC has several built-in functions that greatly extend its capability. They include the following: (i) SQR (X) - SQUARE ROOT FUNCTION (ii) ABS (X) - ABSOLUTE VALUE FUNCTION (iii) LOG (X) - LOGARITHM FUNCTION (iv) SIN (X) - SINE FUNCTION (v) TAN (X) - TANGENT FUNCTION (vi) RND (X) - RANDOM NUMBER FUNCTION (vii) EXP (X)- EXPONENT FUNCTION (viii) ROUND (X,N) -  ROUNDS THE NUMBER X TO THE NUMBER OF DIGITS N (ix) INT (X) - FIND THE INTEGER OF A REAL NUMBER
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SS3 1ST TERM SCHEME OF WORK (I.C.T) FOR 2024/25 ACADEMIC SESSION

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  SS3 1ST  TERM SCHEME OF WORK (I.C.T) 1. BASIC pr ogramming Language II (Advanced) – Built In Functions – Simple BASIC program. 2. BASIC programming Language II (Cont) – Simple BASIC program/WAEC/NECO approach 3. The Internet II – Meaning, Definition of terms, Benefits of the Internet 4. The Internet III – Electronic Mail Services – Definition, Creating Email Account, Email Address, Differences Between Email and Website 5. WAEC/NECO Practical – Microsoft Word/Microsoft Excel 6. Networking 1 – Definition- Types of Network – LAN –WAN- PAN- CAN and Network Topology 7. Mid Term Break 8. Networking 2 – Network Devices – Hub – NIC Card – The Switch – The Router – The Modem e.t.c 9. Networking 3 – Cables and Connectors ·       Network Cables– Twisted Pair Cable – Coaxial Cable – Fibre Optics Cable – Telephone Cable – Power Cable – Data Cables ·       Network Connectors – RJ 11, RJ 45, BNC T – Connector, Male and Female Connectors 10. Revision   11-12- Revision/Exa
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JS3 COMPUTER STUDIES 1ST TERM SCHEME OF WORK FOR 2024/25 ACADEMIC SESSION

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  JS3 COMPUTER STUDIES 1ST TERM SCHEME OF WORK WKS 1. The Internet Environment - Search Engine - Meaning - Examples - and Uses of Search Engine ·        2. Practical - The Use of Search Engine - Google.com, Microsoft Bing, Ask.com. DuckDuckGo ·        Make use of a search engine to search and download information into the computer system 3. Digital Divide 1 - Concept of Digital Divide - Features of Old and New Economy- Benefits of New Economy 4. Digital Literacy - Meaning, Characteristics of Digital - Education - Workforce - Society. 5. Database 1 - Definition - Terminologies - Data Items 6. Database (Practical with Microsoft Access) 7. Mid Term Break 8. Spreadsheet Package 1 - Meaning, Examples and Uses 9. Spreadsheet Package 2 - (Practical) - Features - Terminologies - Row - Column - Cell - Worksheet e.t.c 10. Revision 11-12. Examination 13. Vacation
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SS1 1ST TERM SCHEME OF WORK - I.C.T FOR 2024/25 ACADEMIC SESSION

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  SS1 1ST TERM SCHEME OF WORK - I.C.T 1. Overview of Computer System 1 - Definition - Constituents - Parts of a Computer and Characteristics  2. Historical Development of Computer Devices 1 - (Pre Computing age to 19th Century) - Abacus, Slide Rule, Napier's Bone, Pascal's Calculator (Pascaline), Leibnitz Multiplier, Difference Engine e.t.c 3. Historical Development of Computer Devices 2 - ( 20th Century to Date) - ENIAC -EDVAC -UNIVAC - Desktop Personal Computers- Laptop & Notebook computers - Palm Top computer 4. Computer Hardware - Classification of Hardware - System Unit - Peripherals - Input - Output Devices - Storage Devices 5. Input Devices - Definition and Examples - Keyboard, Mouse, Joystick, Light Pen, Microphone  e.t.c 6. Output Devices - Definition and Examples - Monitor (VDU), Printers, Projector, Speakers e.t.c 7. Mid Term Break 8. Computer Software 1 - Meaning and types of Software - System and Application Software. 9. Computer Software 2 -
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JS1 (FIRST TERM COMPUTER STUDIES SCHEME OF WORK) FOR 2024/25 ACADEMIC SESSION

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  JS1 (FIRST TERM COMPUTER STUDIES SCHEME OF WORK) 1. Basic Computer Concept: Meaning, Parts, categories, description of input and output devices 2. Technology of different Information Age- Stone Age, Iron Age, Industrial Age, Electronic Age 3. Historical Development of Computer- Early counting Devices, Mechanical, and electromechanical 4. Generation of Computers: 1st, 2nd, 3rd, 4th, and 5th Generations 5.          Data and Information Transmission- Meaning, types, sources, and qualities of a good information 6. Information Transmission- Meaning, methods, and modes 7. Mid - Term Break   8.   Classification/Means of Transmitting Information - Invention of    printing, radio and television, computers and linking up   computers with information technology (IT) 9..           I.C.T Applications In Everyday Life 10.               Revision 11.               Examination 12.               Examination 13.               Vacation PRACTICALS .            Game Design
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