In this chapter, you’ll learn what data types are, why you need them, and how the Oracle database handles different data types.
What is a Data Type?
A data type is the format that a piece of information is stored in a database. Each column in a table has a data type, which is defined when you create the table and specify the column names.
If you’ve done any programming before, such as .Net or Java, you’ll know that there are different data types available in these languages. Database development, and SQL, are no different. Data types are available for specifying how ...
