What's the difference between BLOB and CLOB?
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What's the difference between BLOB and CLOB?
CLOB is similar to the oracle 7 long type, a clob can hold single-byte character data.
NCLOB stores fixed-width multibyte national character set data.
BLOB is similar to oracle & lon raw type, a BLOB can hold unstructred binary data.You can store and retrieve the data
piecewise.
BFIlEs allow read-only access to large binary files stored outside the oracle database.Unlike other three LOB types, BFile data is stored in a seperate file that is not maintained by oracle.Manipulations to BFILE data do not participate in oracle transactions.They can not be committed or rolled back.
store text as an image-use BLOB
store text- use CLOB
Curtesy to Oracle Forums, Metalink.
Sam
To help you remeber the distictionion, look at the first letter -
CLOB - C = Character
BLOB - B = Binary
NCLOB - N = National (Guess what C is?)
Suppose I am using the UTF8 Character set, do I need to use NCLOB instead of CLOB?
Thanks,
Ed