Character Large Object

What Does Character Large Object Mean?

A character large object (CLOB) is a large block of text
stored in a database in some form of text encoding. Oracle and IBM DB2 database
provide explicit support for CLOBs, though other databases can manipulate large
amounts of text in some way. CLOBs can be very large, up to two gigabytes or


Techopedia Explains Character Large Object

A character large object, also known as a CLOB, is similar
to a binary large object (BLOB) in that they are both large amounts of data.
The key difference is that a CLOB is stored using a text encoding method such
as ASCII or Unicode. CLOBs are supported in Oracle and IBM DB2, though some
databases cannot use certain commands such as “LIKE” on CLOBs. Other databases
support text, memo or long character fields. CLOBs can encompass long documents
such as books. They can range up to two gigabytes in size or even more. Some
databases store CLOBs by referencing out-of-table data.


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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…