My_assigment

Data types
1.what are they?
-A data type (or datatype) in programming languages is a set of values and the operations on those values. Almost all programming languages explicitly include the notion of data type, though different languages may use different terminology. Most programming languages also allow the programmer to define additional data types, usually by combining multiple elements of other types and defining the valid operations of the new data type. For example, a programmer might create a new data type named "Person" that specifies that data interpreted as Person would include a name and a date of birth. Common data types may include:

2. what role do they play in database?
-the data base itself can help to keep bad data out and can speed things up especially searching and sorting.

dbms software

string-character string has fixed size up to 64 kb