SS 3 Data Processing

Historical Development of Petroleum in Nigeria The discovery of petroleum in commercial quantities took place in 1956 by Shell BP at Oloibiri, located in present-day Rivers State. Since 1976, petroleum has remained the primary source of government revenue in Nigeria. Positive Contributions of Petroleum to Nigeria’s Economy Petroleum has made several positive contributions to the

Data processing is a crucial aspect of various industries, including technology, finance, healthcare, marketing, and more. There are several career options available in the field of data processing, catering to individuals with different skill sets and interests. Here are some career options to consider: 1. Data Analyst: Data analysts collect, process, and analyze data to

Maintenance Of Computer Hardware Part Computer hardware maintenance involves caring for, repairing, and replacing malfunctioning or broken computer hardware components. To ensure the longevity of computers and prevent hardware failures or data loss, regular maintenance is essential. Often, hardware failures occur unexpectedly. Excessive heat can hasten the deterioration of delicate circuits within the system, with

Meaning of Computer Virus A computer virus is a type of malicious software (malware) that is designed to replicate itself and spread from one computer to another. It attaches itself to legitimate programs or files and, when these infected files are executed or opened, the virus code is activated. Computer viruses are intended to cause

What is Computer Network? A computer network is a system that establishes connections between two or more computers using communication links. It encompasses a processing framework comprising multiple autonomous, relatively low-speed workstations that can be accessed concurrently online. In this network setup, remote computer stations connect to a centrally positioned, advanced, high-speed processor through communication

What is Distributed Database? A Distributed Database (DDB) encompasses multiple interconnected databases that are logically related and spread across a computer network. A Distributed Database Management System (DDBMS) serves as the software responsible for managing the DDB. It offers an access mechanism that renders the distribution transparent to users. A distributed database system permits the

What is Parallel Databases? Parallel Databases enhance processing and input/output speeds by leveraging multiple CPUs and disks in a parallel manner. The goal of a Parallel Database system is to optimize performance through the parallel execution of various tasks, including data loading, index creation, and query evaluation. Unlike serial processing, where steps are executed sequentially,

Definition of crash recovery: Crash recovery refers to the process of restoring a database to a consistent and usable state after a system crash. This involves rolling back incomplete transactions and completing committed transactions that were still in memory at the time of the crash. The database reaches a point of consistency when it is

Data security definition: Data security refers to the practices implemented to safeguard data from unauthorized access and corruption. Its primary objective is to ensure the privacy and protection of personal or corporate information. Data security risk assessment: Conducting a risk assessment helps identify potential threats and the potential consequences of data loss, whether it occurs

Indexes An index is a condensed version of a database table, containing selected fields and always maintained in a sorted form. It includes a pointer to the corresponding record in the original table, allowing retrieval of non-indexed fields. Each index entry consists of a value and a pointer to the first record containing that value.