Chapter 6 (information system) answer

Learning area 6: INFORMATION SYSTEMS (FORM 5) DEFINITION: DATA: like raw material, it is not organized and has a little Value. Include text, numbers, images, audio, video. INFORMATION: is organized data that is valuable and Meaningful to a specific user. INFORMATION SYSTEM: is a set of related components that collects Data, processes data and provides information. Collect data Process data Provide Information

Usage Of Information System In various Field 1. Education ,[object Object],[object Object],[object Object],[object Object],2. Business 3. Management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Information Systems Components Input Process Output ,[object Object],[object Object],[object Object],[object Object]

Components Of Information Systems Data Hardware Software Procedures People

5 types of Information System Transaction Processing System (TPS) Expert System (ES) Management Information System (MIS) Decision Support System (DSS) Executive Information System (EIS)

Hierarchy Of Data DATABASE Collection of information on specific subjects Can be accessed, updated, stored, retrieved FILE Collection of record. Students record (many students) RECORD Collection of related fields. Students record (1 student) FIELD One or more Characters (byte) Students ID, Name, address BYTE ,[object Object],[object Object],Eg: s (01010011) BIT - Represented by 0 & 1 -Smallest unit 0 and 1

BIT BYTE FIELD RECORD FILE Binary digit (bit) Electronic charge 0 OFF 1 ON ASCII Symbol 00110000 0 00110001 1 Customer ID Name C001 Ali C002 Ahmad Address Phone no. Engkilili 019-2223333 Lubok Antu 013-5554444 Customer ID Name C001 Ali C002 Ahmad Address Phone no. Engkilili 019-2223333 Lubok Antu 013-5554444 Customer ID Name C001 Ali C002 Ahmad Address Phone no. Engkilili 019-2223333 Lubok Antu 013-5554444

Database Is a structured collection of information on specific Subjects. Database Management system Is a program that accesses information from a database. Eg: DBMS, ORACLE, SQL Server, Microsoft access. Meaning of …. Benefits of Using Database Data can be shared Data integrity is assured Information can be accessed easily Minimizes data redundancy

Define the meaning of …... ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data Manipulation Data Manipulation refers to the operations of _accessing_, __locating____, _organizing___, _modifying____, and __managing__ data contained in the database.

7 Basic operations of data manipulation Data manipulation Example of statements: 1. update Update the contact number from 03- 78087614 to 03-78088808. 2. Insert Adding record to a database table. 3. Delete Removing record from a database table. 4. Retrieve Retrieve records from a database table. 5. Sort Sorting database. Ascending (A-z) Descending (z-A) 6. Filter Filtering records from a database table. 7. Search Finding records from a database table.

Phases of system development ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Chapter 6 (information system) answer

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Chapter 6 (information system) answer