Learn Oracle: Datatypes for SQL and PL/SQL, Numbers

(Lewis R Cunningham) Datatypes are a subject that confuses many people. There are many types and many sub-types. A type is a basic datatype like NUMBER. A sub-type is derived from a type. An INTEGER is a sub-type of NUMBER. A sub-type usually add a constraint to a type and that creates the new sub-t

Read More - Register for Free Membership