The following are some of the prominent computer professional bodies in Nigeria. Nigeria Computer Society (NCS) Institute Of Management Information System. (IMIS) Computer Professional Registration Council of Nigeria (CPN) Information… Read More »Computer Professional Bodies
Computer personnel are those who assemble, install, repair and operate the computer system. The term equally includes those people who make their living out of the computer industry. They include… Read More »CAREER OPPORTUNITIES IN DATA PROCESSING
There are various ways in which viruses can attack computer system; When you download or open attachment in e-mail message or by instant messaging messages Installing unknown program from unreliable… Read More »SOURCES OF COMPUTER INFECTION VIRUS | WARNING SIGNS, PREVENTIVE, ANTIVIRUS
Computer virus is a software program written with malicious intentions. They are intentionally written by some software developer to cause severe damage for the computer, programs, and data files in… Read More »COMPUTER VIRUS | TYPES, EXAMPLES, EFFECTS
The Origins of the internet dates back to1960s when the United State funded research projects of its military agencies to build robust, fault-tolerant and distributed computer network. The internet is… Read More »INTERNET | BENEFITS, FUNCTIONS, ABUSE, SECURITY
A computer network is a system that connects two or more computers together using a communication link. It describes a processing system with a number of independent, relatively low-speed, online,… Read More »NETWORKING | LAN, MAN, WAN, SERVER, TOPOLOGY
A Distributed database (DDB) is a collection of multiple, logical interrelated database distributed over a computer network. A Distributed database management system (DDBMS) is the software that manages the DDB… Read More »DISTRIBUTED DATABASE
Parallel Database improve processing and input/output speeds by using multiple CPU and disks in parallel. A Parallel Database system seeks to improve performance through parallelization of various operations, such as… Read More »PARALLEL DATABASE
Crash recovery is the process by which the database is moved back to a consistent and usable state. This is done by rolling back incomplete transactions and completing committed transactions… Read More »CRASH RECOVERY | ARIES, CONDITIONS, PROCEDURES
Crash recovery is the process by which the database is moved back to a consistent and usable state. This is done by rolling back incomplete transactions and completing committed transactions… Read More »CRASH RECOVERY
DEFINITION OF DATA SECURITY Data security is the practice of keeping data protected from corruption and unauthorized access. The focus behind data security is to ensure privacy while protecting personal… Read More »DATABASE SECURITY
Maintenance is highly essential in order to prolong its contributing functionality. SOFTWARE MAINTENANCE The maintenance of programs inside the computer system such as virus, a spyware removal, back up software… Read More »MAINTENANCE OF COMPUTER II
Maintenance of computer hardware is a way of taking care, repairing and replacing broken and failing computer hardware. Maintenance is necessary on computer to avoid hardware failure or loosing valuable… Read More »MAINTENANCE OF COMPUTER HARDWARE I
DENSE INDEX This is said to be dense if it contains (at least) one data entry for every search key value that appears in a record in the indexed file.… Read More »DENSE VERSUS SPARSE INDEXES
An Index is a copy of database table that has been reduced to certain fields and the copy is always in sorted form. The index also contains a pointer to… Read More »INDEXES
DEFINITION OF DATA MODEL Is the process of structuring and organizing data. TYPES OF DATA MODELS (1) Flat (2) Hierarchical (3) Network (4) Relational (5) Object-Relational and (6)Star Schema… Read More »SS 3 Data Processing Revision