Introduction to four lobs Data Types

In oracle, four lobs types are available: blob, clob, bfile, and nclob.

In oracle, four lobs types are available: blob, clob, bfile, and nclob.

In Oracle, four lobs types are available: blob, clob, bfile, and nclob.

The following is a brief introduction to the lob data type.

Blob: Binary lob, Which is binary data. It can be up to 4 GB and stored in the database.

Clob: character lob, character data, up to 4 GB, stored in the database.

Bfile: binary file. It is a read-only binary data stored outside the database. The maximum length is limited by the operating system.

Nclob: supports a clob column of the byte character set (nultibyte characterset.

Oracle Database developers often encounter lob data retrieval and operation. I will introduce some methods and skills for lob data processing in oracle, and hope to help readers in future development.

Oracle can use multiple methods to retrieve or operate lob data. The common solution is to use the dbms_lob package.

Other methods include application programminginterfaces and oracle call interface.