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Database Management System – Definition, Basic Database Terminologies, Forms of Database (SS3 NOTES)

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  Database Management System  Definition, Basic Database Terminologies, Forms of Database Definition of Database and DBMS Database is a collection of related data organized for rapid search and retrieval. It can also be defined as a persistent, logically coherent collection of inherently meaningful data, relevant to some aspects of the real world. DBMS (Data Base Management System) :  DBMS is an application software that controls the data in the database, including overall organization, storage, retrieval, security and data integrity. Examples of DBMS Packages (i) Dbase (ii) Rbase (iii) MS Access (iv) Oracle (v) Paradox (vi) MYSQL Server (vii) SyBase (viii) FOXPRO (ix) IDMS (x) System 2000. (xi) Ingres (xii) Postgres (xiii) NoSQL Basic Database Terminologies (i) Field:  A field is a specific item of information containing a homogenous set of values throughout the table. Fields appear as columns in a table and as cells in a form. (ii) Record:  an individual listi...

THE KEYBOARD - DEFINITION, TYPES, SECTIONS AND MASTERING THE KEYBOARD (JS1 NOTES)

THE KEYBOARD  DEFINITION, TYPES, SECTIONS AND MASTERING THE KEYBOARD DEFINITION OF KEYBOARD The keyboard is an input device that is used to enter  data  into the  computer . A standard keyboard has 101 keys which include alphabetic characters, punctuation symbols, numbers and varieties of function keys. The style of keyboard mostly used today is the QWERTY  keyboard. TYPES OF KEYBOARD 1. Mechanical keyboard 2. Wireless keyboard 3. Virtual Keyboard 4. USB keyboard 5. Ergonomic keyboard. SECTIONS ON THE KEYBOARD/KEYBOARD SECTIONS The keyboard is divided into sections namely: (i)         The numeric keys (0-9) (ii)        The alphabetic keys (A-Z) (iii)       Function keys (FI -F12) (iv)       Arrow keys (up/down/left/right)             (v)        Special keys   (...

ICT AS A TRANSFORMATION TOOL 2 - ICT GADGETS(JS2 NOTES)

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 ICT AS A TRANSFORMATION TOOL 2 -  ICT GADGETS - GSM - FAX MACHINE - TELEPHONE- AUTOMATED TELLER MACHINE (ATM) -DISPENSING MACHINE- RADIO AND TELEVISION SETS Definition of ICT Gadgets A  gadget  is a small technological device or an appliance that has a particular function.  Examples of ICT gadgets include 1.  Fax machine 2.  Telephone 3.  Cellular Phone (GSM)  4. Computer 5.  Automated teller machine (ATM)Television set 6.Dispensing machine 7.  Radio Set 8. Television set e.t.c. 1. Fax Machine (Facsimile Machine) This transmits texts and graphics messages from one location to the other; it might be within the country or outside a country with the use of series of number called Fax number. It is a combination of a telephone and a photocopier. 2. Telephone :  A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A...