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PRACTICAL ON INTERNET E-mail is a method of sending digital messages from one computer to another. E-mail is short for Electronic Mail. E-mail is received instantly by the users email provider and mails stay in the mailbox until accessed by the users. Mail boxes have storage limit (limited amount of emails which they can hold […]
NORMAL FORM Normalization of Database Database Normalization is a technique of organizing the data in the database. Normalization is a systematic approach of decomposing tables to eliminate data redundancy and undesirable characteristics like insertion, updates and deletion Anomalies. It is a multi-step process that puts data into tabular form by removing duplicated data from the […]
DATA MODELLING Data modeling is a process used to define and analyze data requirements needed to support the processes within the scope of corresponding information system in an organization. Creating simple data mode Microsoft Access offers one table, queries, forms, reports, macros and modules and these will be created before creating a data model. Table: […]
DATA MODEL What is Data Model?. Data Model can be defined as abstract model whose purpose is to describe how data can be used and represented effectively. A data model is a picture or description which shows how data are to be arranged to serve a specific purpose it determines the structure of data and […]
STARTING MICROSOFT ACCESS To start Microsoft Access, follow the steps below: Click start button, the program menu Move to the MS Office menu Click on MS Access Once Access is running, an initial screen will be displayed. From the initial screen, you can either (i) create a new blank database (ii) open an existing database […]
OPERATING SYSTEM This is a set of programs which takes over the operation of the computer to the point of being able to allow a number of programs to be run on the computer without intervention by an operator. It acts as an interface between the user and the hardware. It controls and allocates hardware […]
Information Transmission is the process of transferring information from one place to another. There are many ways by which information could by passed across to somebody or group of people. The major methods are: Ancient Method Modern Method Ancient Method In the olden day information could be passed from one to another through different means […]
ICT is an acronym which stands for Information and Communication Technology. It is defined as set of technological tools and resources used to communicate,
NUMBER BASES CONVERSION OF OTHER BASED TO DECIMAL SYSTEM To convert numbers in other bases to denary system, expand the given number in powers of its base and evaluate. Examples 1) Convert the following numbers to base ten (i) 10012 (ii) 255eight (iii) 35416 (i) 10012 = 1 x 23 + 0 x 22 + […]
GENERATIONS OF COMPUTER A generation is often referred to the state of improvement in the development of a product. Generation of computer is the advancement of computer technology from time to time. In every generation, the circuitry has become smaller and more advanced than the previous generation. Each generation of computer is characterized by a […]
DATA PROCESSING Data processing is the collection and manipulation of items of data to produce meaningful information. Data processing is the process of manipulation data to generate information. Data processing methods are techniques used to process/sort different types of data. TYPES OF DATA PROCESSING (1) Batch Processing (2) Online Processing (3) Real-time Processing (4) […]
Characteristics of a Computer Speed – high speed of operation Storage – Large storage volume 3. Versatility – Can be used to perform wide range of tasks 4. Diligence – It can perform similar operations at the same speed and accuracy at all times. 5. Automatic – Tasks are performed automatically based on the programme […]
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