What are the data types in ICT?
5. Data Type and Organisation | IGCSE ICT
- logical / Boolean.
- alphanumeric / text.
- numeric (real and integer)
- date.
What is data ICT?
In terms of ICT, data is simply any numbers, letters or symbols that can be entered into a computer system. Data values don’t have any meaning unless we put them into context (context means a setting or circumstance).
What is a field in a database ICT?
Each table contains a lot of records. Each of these individual pieces of information in a record is called a ‘field’. DEFINITION: a ‘field’ is one piece of data or information about a person or thing.
What is a primary key ks3?
The primary key is a field that contains data that is unique for each record.
What is a data type teach ICT?
Databases store data. In order to make the database more efficient, different types of data are usually classified as a certain ‘data type’. > Text or Alphanumeric – stores data which includes text, symbols and numbers. An example would be ‘name’ e.g. John Smith.
What are the four types of data in computer?
4 Types of Data: Nominal, Ordinal, Discrete, Continuous.
What are the sources of data in ICT?
Interviews, diaries, letters, journals, speeches, autobiographies, and witness statements. Original hand-written manuscripts. Government documents and public records. Art, photographs, films, maps, fiction, and music.
What is a record ICT?
A record is all of the data about one person or one thing. A record is made up of one or more ‘fields’. For example a name and address database could have one record such as this: “Joe Blogs”, “34 Wyvern Road” , “Manchester”, “UK”, “MN253PE”
What do rows represent in a Datasheet?
In datasheet view, information is displayed in rows and columns—similar to a spreadsheet. Records are displayed as rows, so each row is an individual record. Within each row, columns represent fields within the record.
What is the AutoNumber data type?
The AutoNumber data type automatically generates a unique number for each record that’s added to a table, and is commonly used for primary key fields.
What is the use of AutoNumber in access?
Access Tip: Using the AutoNumber Data Type in Access. The AutoNumber data type automatically generates a unique number for each record that’s added to a table, and is commonly used for primary key fields. Seldom, if ever, should the value of the AutoNumber field be shown to your database users.
What is a text data type?
A text data type can hold any letter, number, symbol or punctuation mark. It is sometimes referred to as ‘alphanumeric’ or ‘string’. The data can be pure text or a combination of text, numbers and symbols. Examples of text data types in use:
What datatype should I Set my telephone number to?
However all telephone numbers start with a 0 and you can’t put a 0 in front of a ‘number’ datatype, so telephone number needs to be set as a ‘text’ datatype. Here is a database table with the different data types set up for you to see: