you can use blob. but not all DB support blob.
look for Binary large object (BLOB) in your db manual. if your db support it, its manual will have some example how to write your sql to upload a file. it doesn't matter what language you use for programming, your db will only support its own sql syntax, so set your mind free from "i'm using xxx" to program.
Most of the time it is easier to store the file in the filesystem and then just store the path / filename in the database. It's also more efficient this way (eg. if you want to serve the files as static content, just link/point to the path. No need to execute code, connect to DB, put it in temporary file etc)
Blobs have their own legitimate uses - binary caching, remote access to the blob, files that you need to process in some way before serving etc. But not to store local static files.
in MS SQL 2000 n above u have image data type
dont know bout others
