What is a blob in SQL Server?

What is BLOB data type in SQL Server?

A BLOB, or Binary Large Object, is an SQL object data type, meaning it is a reference or pointer to an object. Typically a BLOB is a file, image, video, or other large object. In database systems, such as Oracle and SQL Server, a BLOB can hold as much as 4 gigabytes.

What Is A BLOB data type?

The BLOB data type stores any kind of binary data in random-access chunks, called sbspaces. Binary data typically consists of saved spreadsheets, program-load modules, digitized voice patterns, and so on. The database server performs no interpretation of the contents of a BLOB column.

How are BLOBs stored in SQL Server?

Rather than inundating the standard database filegroups with BLOBs, SQL Server stores BLOB content as files in the file system where they belong.

What is a BLOB image?

From Wikipedia, the free encyclopedia. A binary large object (BLOB) is a collection of binary data stored as a single entity. Blobs are typically images, audio or other multimedia objects, though sometimes binary executable code is stored as a blob.

What is BLOB example?

A blob is a data type that can store binary data. … For example, a photo album could be stored in a database using a blob data type for the images, and a string data type for the captions.

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Why is it called BLOB storage?

It allows users to store large amounts of unstructured data on Microsoft’s data storage platform. In this case, Blob stands for Binary Large Object, which includes objects such as images and multimedia files. These are known as unstructured data because they don’t follow any particular data model.

What is the difference between BLOB and text?

BLOB is used for storing binary data while Text is used to store large string. BLOB values are treated as binary strings (byte strings). They have no character set, and sorting and comparison are based on the numeric values of the bytes in column values. TEXT values are treated as nonbinary strings (character strings).

Is Varbinary a BLOB?

Ultimately, VARBINARY is virtually the same as BLOB (from the perspective of what can be stored in it), unless you want to preserve compatibility with “old” versions of MySQL. … In most respects, you can regard a BLOB column as a VARBINARY column that can be as large as you like.

Where are SQL files stored?

Storing Files in SQL Database Using FILESTREAM – Part 1

  1. Unstructured files can be stored in the VARBINARY or IMAGE column of a SQL Server table. …
  2. Instead of storing the entire file in the SQL table, store the physical location of the unstructured file in SQL Table.

How are BLOBs stored in database?

BLOBs are not stored in the normal database files on disk in the same way as is other data managed by DB. Instead, they are stored as binary files in a special directory set aside for the purpose. … If you are using an environment, then by default the BLOB directory is created within the environment’s home directory.

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