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CIT143 INTRODUCTION TO DATA ORGANISATION AND MANAGEMENT
is associated with statistics that have been organized in Data tables.
Data is associated with that have been organized in Statistics tables.
Data is associated with statistics that have been organized Tables in .
are created whenever someone uses communication symbols such as words, numbers and graphic images to represent Data ideas or information.
Data The words, numbers and images are referred toas
The idea or knowledge that someone seeks to represent with some Information words, numbers or images are called_
is the idea or knowledge that someone is able to infer Information from those words, numbers of images.
A is any medium that has been used to convey data data source symbols dAantyamsoeudriucem that has been used to convey data symbols is called a
Information are specific facts, truths and ideas
Knowledge is a pool of interconnected facts, truths and ideas.
aim to improve your knowledge of the principles of effective creation, organization and management of data, and to some Data organization and management extent, information and knowledge.
Data are the symbols that people have used to communicate some ideas or knowledge to others.
is concerned with the selection, combination, arrangement and formatting of symbols such as words, numbers and Data organization images to form data. The aim of is to facilitate effective storage, transfer, computation or interpretation of the data by either human beings or data organization machines.
refers to the various activities that must be performed by individuals or organizations to ensure that only useful data are Data management created for conveying information
Data management is concerned with the following that data are appropriately organized data analysis storage and retrieval that data are efficiently transferred across space and time as needed that data are effectively protected from loss or damage that data are properly interpreted Data management processes in the life-cycle are the following Data policy making Data definition and structuring Data collection and creation Data validation and quality control Data analysis and summarization Data storage and retrieval Data archiving and protection Data communication and transfer Data display and presentation refers to the process of making decisions about what Data policy-making data should be created and for what purpose.
refers to the process of determining the formats in which Data definition and structuring data will be created, acquired, stored and transferred.
refers to the process of actually creating or collecting data Data collection and creation in line with the data policies
refers to the process of verifying and certifying that the data that have been created, collected or acquired from other sources meet certain minimum standards of accuracy and consistency. Data validation and quality control
refers to the different processes for comparing and analyzing data, and for computing, aggregating and summarizing data into other data such as statistics, charts, maps, abstracts and Data analysis and summarization summaries.
refers to the physical storage and retrieval of data from Data storage and retrieval different types of media, such as paper and computer media.
has been the traditional medium for storing and Paper retrieving data and information.
refers to the process of providing either special protection Data archiving and protection or secure long-term storage for extremely valuabledata.
Data protection are often performed to ensure that data are protected from loss, theft or damage, and guarded from people who should not have access to the data.
refers to the process of transporting data across space and time through different media such as documents and computer Data communication and transfer and telephone networks.
refers to the process of displaying and presentingdata Data display and presentation for direct human perception and interpretation.
Data display and presentation is a critical last stage in the data management cycle because it occurs at the point when data are seen or heard, and immediately interpreted to gain information. The aim of data management merges with those of information management at this stage because both aim to facilitate human access to, and interpretation of, data to obtain information.
aims to facilitate the use of integrated ideas from different subjects to solve human problems thereby expanding Knowledge management knowledge further.
activities aim to facilitate the cost-effective creation, Data management processing and transfer of data in different contexts.
An may be described as a set of interdependent activities information system designed to provide data and/or information to people.
Information systems aim to provide or facilitate access to data and information for a particular group of people, who may be researchers, managers, student or the public.
A is defined as a set of mutually interdependent components all contributing toward the achievement of some goal or System objectives.
All systems share the following features: Goals or objectives Sub-systems Environment Activities Products Resources
Goals or objectives give direction to the activities of a system.
are the mutually dependent components of a system. Sub-systems
comprises all other systems that do not belong to a Environment particular system, and with which the system shares boundaries.
A system usually must perform some physical in order Activity to achieve its goals and objectives.
The activities of a system can usually be divided into two main types - physical activities, and communication and information activities.
are required for performing physical and information Resources activities.
The resources usually include tangible and intangible things, such as space, equipment, energy, finance, time and human effort.
provide the settings within which data and information Information systems management activities are performed.
Information systems perform the following functions Input Processing Storage Output Communication
activities involves the inflow (i.e., input) of data to the Data input system from other systems.
activities involves the transformation of data into more informative data, by aggregating, desegregating, summarizing and Data processing computing the data. entails storing the data temporarily or permanently Data storage before, during and after processing.
entails sending out processed data and information from Data and information output the system to other systems (people, organizations, communities).
Data and information communication entails the sending and receiving of data and information among the components of a system, as well as between the system and other systems in its environment.
activities are invariably performed in connection with Data communication the input, storage, processing and output activities of systems.
Scientists have methods for expressing quantitative information with scientific notation data called are designed to mimic human beings in terms of the ability to accept different combinations of alphabetical, numeric and other characters as input, and to produce these same characters as Computers output.
is for entering alphabetical, numerical and special Keyboard characters
is used for indicating and selecting options from menus Mouse displayed on a computer monitor
Scanners are used for taking pictures of paper documents
Digital cameras is used for taking photographs of objects
Microphones are input device for sound and voice)
The are designed to transmit sequences of combinations inputs devices of high and low electronic pulses.
The input devices perform the task of detecting signals produced by the action a computer operator, such as the press of a key on the keyboard, or the movement of a mouse, or the clicking of a digital camera, or the act of speaking into a microphone. Ten The decimalsystem has symbols or digits (0, 1, 2... 9).
Most computers use a binary coding system known as the
American Standard Code for Information Exchange (ASCII) American National Standard Institute ANSI stands for
American Standard Code for Information Exchange ASCII stands for
A is a set of statements that describe the circumstances, objectives and constraints to be followed by people in an organization Policy or information system concerning a particular activity or issue.
Data policies are usually formulated to ensure that only potentially useful data are created or acquired for processing and management by an organization or information system.
is usually performed by different organizational units or Data collection systems components.
A is a basic guide to action that sets the boundaries data policy within which data management activities are to take place.
Unwritten A policy may be written or policy manual A written policy is usually referred to as a .
A is a set of statements that describe the circumstances, objectives and constraints to be followed by people in an organization data policy or information system concerning data management activities.
There are approaches to grouping or categorizing data Two
NTheetwtyopreks of data structures or models are the hierarchical and The to data modeling is used to link groups of data in a hierarchical approach sort of parent child manner.
The to data modeling is used to link groups of data in network approach many ways at the same time.
A data model is one whereby data records are grouped or interrelated in terms of being super-ordinate or subordinate to one Hierarchical another.
refers to the process of arranging, grouping or linking Data modeling groups of data for different purposes. Data can be structured as a table of data consisting of rows (data records) and columns (data fields).
Data is created when people write or record data by hand or with devices such as typewriters, keyboards, scanners, cameras
is often undertaken by a system or organization during Data collection laboratory or field studies
refer to the automatic capture and recording of data by Data capture mechanical and computer input devices.
Examples of computer input devices are scanners, digital cameras, optical character devices, microphones, etc. Optical Mark Recognition OMR is the acronym for _ is usually undertaken to obtain secondary data from Data acquisition various sources.
The following are major sources of secondary data Books Newspapers Technical reports Statistical bulletins Central and Commercial banks Annual reports of organizations Computer files or databases created The Internet
Data collection entails four stages of activities Defining what data to collect Selecting or designing the instrument or device to use for collecting the data Using the instrument of device correctly to measure the variables Recording correctly the measurements made with the instrument
refers to the processes and methods by which the accuracy, validity and reliability of data is ensured at the different Data quality control stages of the data management cycle.
is often also used to describe an entity that varies from Variable one situation to another
refers to the preciseness or exactness with which data Data accuracy describes or expresses information about an entity.
refers to the extent to which a set of data expresses Data validity accurate and true information about an entity. Data are considered valid only when they express true information True about entities.
Two There are main methods for cross-checking textual data
Data quality control checks can be performed by humans and/or machines.
is a crucial data management activity because it determines the quality of the data collected and managed by an Data quality control information system to produce information.
seeks to ensure that the resources of an information system are not wasted on collecting, storing and processing Data quality control inaccurate, unreliable or invalid data.
The following are data storage media Human brain Paper Microforms Computer media Audio and video media
became a media for storing data when papyrus was Paper invented.
is the general word used to describe all miniature but non-computerized storage media such as film rolls, film slides and Microforms microfiche A on a computer media is any collection of data stored data file under a single name.
Database Management System DBMS is the acronym for
is a type of software is used to create and manage data files containing structured data tables which in turn contain data Database Management System (DBMS) records and data fields.
A is as a set of computerized and linked files that have been created with a database management system for storing the data Database of an organization or information system.
is designed to facilitate the creation and linking of files so Database Management System (DBMS) that the files can be used together and at the same time.
The files that are created and linked by the DBMS form Database a _
is designed to create a particular kind of data file known DBMS as the data table.
A is used for storing data on different entities in the form of records (rows) and fields (columns data table
True A separate data table is created for each entity. data record Each row of data is also known as a _
Each record of data is subdivided into separately meaningful portions data fields known as
refers to a pre-defined format for entering data into one or Form more data tables in a database
A is a pre-defined way of viewing or displaying some or all View the records and fields in a data table.
A is a statement that instructs a DBMS to find and Query display from a database all data that meet some criteria.
A is created when a query instruction is performed bythe query table DBMS. A is either a selective or a comprehensive list or summary Report of the data in records of one or more data tables in a database.
True A DBMS can be used to create more than one report.
is the process of reducing some voluminous data into Data Summarization less voluminous data.
is the process of investigating and identifying the Data analysis attributes or characteristics of a particular set of data. search is the type of search the searcher only knows the subject or topic of the information required from a data store, and is not sure whether there are any specific data in the store that can Subject provide the information.
is the process by which a person searches through a data Information store for some data or information.
The field of a table is the field in the record structure of primary key a table data in which will be used to identify each record in the table.
Golden key A primary key is also known as
is a data type used for monetary values or numbers Currency requiring rapid calculations.
In Microsoft access requires you to specify the type of Save as database to create.
In Microsoft access requires you to specify a name for the File name database.
In Microsoft access requires you to select a folder from Save in the corresponding drop down menu.
is the word used to describe the process of adding, Updating modifying or deleting data in a table.
refers to the amount of character spaces that will be provided for entering data in the field. Field width
refers to a field that will contain different types of Character characters - alphabetical, numeric, special.
refers to the type of data that can validly be entered into Field type the field.
refers to the name, label or heading for a field. A field Field name name should be one that reveals the type of data stored in the field
A is either a selective or a comprehensive list or summary of the data in records of one or more data tables in a Report database.
A table is created when a query instruction is performed Query by the DBMS.
A is a statement that instructs a DBMS to find and Query display from a database all data that meet some criteria.
refers to a pre-defined format for entering data into one Form or more data tables in a database.
The record was a popular media for storing sound data Gramophone before the arrival of audio and video tapes and CDs.
is the general word used to describe all miniature but non-computerized storage media such as film rolls, film slides, Microforms microfiche, etc Data were initially stored on paper by writing until long hand printing was invented.
Paper became a media for storing data when was Papyrus invented.
Data refers to the extent to which a set of data expresses Validity accurate and true information about an entity.
Data refers to the preciseness or exactness with which Accuracy data describes or expresses information about an entity.
is a large pool of meaningfully interconnected ideas Knowledge possessed by someone.
The aim of data organization is to facilitate effective storage, transfer, computation or interpretation of the data by either human beings Machines or
Management Data organization is an aspect of data
Data validation and refers to the process of verifying and certifying that the data that have been created, collected or acquired from other sources meet certain minimum standards of quality control accuracy and consistency
Data storage and refers to the physical storage and retrieval of data from different types of media, such as paper and computer media. Paper has been the traditional medium forstoring and retrieving data and information. Retrieval
and protection refers to the process of providing either special protection or secure long-term storage for extremely valuable Data archiving data
and transfer refers to the process of transporting data across space and time through different media such as documents Data communication and computer and telephone networks.
may be described as a set of interdependent activities Information system designed to provide data and/or information to people.
aim to provide, or facilitate access to data and information for a particular group of people, who may be researchers, Information systems managers, students, or thepublic
Sub-systems are the mutually dependent components of a system.
12.66 1.266E+01 equals in decimals
0.000987 9.870E-04 equals in decimals
129 10000001 equals in decimal
The recognition of information as a vital resource has given rise to a resource management branch of management known as information data are data that have been uniformly or logically defined and arranged to facilitate human and machine processing and Structured understanding.
data are those that have not been so defined and Unstructured arranged.
is the method of imposing a meaningful or logical Data model structure on data or records.