Lesson 2: Data and its types

Bit = The smallest unit in computing
Data = A fragments of information, are facts. In the electronic database, it is a composition of series of bits or bytes.

Note: Data is plural and Datum is singular

Information = a knowledge, or a group of data with specific meaning.

Database = storage of information or a pool of information.

Data types = in computing a data types represents the nature of the value in use. Is it a number or a word, a result in condition or an electronic object like photos or a document? Those terms as values needs a specific data types in order for the computing device to understand how the value will be treated in each operations from the set of instructions supplied by the user.

Example of common values and their data types:

Value	Term	Data type
100	Number	Int/Integer/Long
12.4	Number/Fraction	Double/Float
Rosito	Word/Name	String/Text/Varchar
True or False/1 or  0	Word	Boolean
!@#$%^	Symbols	Char/Varchar
񧒌󂻠򬄊𑃵	Symbols	Bit/Blob

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Activity

I – Identify each values and write the corresponding data types.

1. 1
2. -1
3. 2.5
4. 0.9
5. Hello World!
6. Ñ
7. ,
8. 膾
9. ()
10. The quick brown fox jumps over the lazy dog.

II – Write the correct answer for each term or figure.

1. 10110111
2. 101FFA
3. False
4. Rosito Dutosme Orquesta
5. First name
6. Rosito
7. Boolean
8. Int
9. 8bits = ?
10. MySQL

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