Oracle Database Developer Interview Question:

Explain Oracle Built-in Data Types?

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There are 20 Oracle built-in data types, divided into 6 groups:

* Character Datatypes - CHAR, NCHAR, NVARCHAR2, VARCHAR2
* Number Datatypes - NUMBER, BINARY_FLOAT, BINARY_DOUBLE
* Long and Row Datatypes - LONG, LONG RAW, RAW
* Datetime Datatypes - DATE, TIMESTAMP, INTERVAL YEAR TO MONTH, INTERVAL DAY TO SECOND
* Large Object Datatypes - BLOB, CLOB, NCLOB, BFILE
* Row ID Datatypes - ROWID, UROWID
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