BLOB: This is a reference to a separate BLOB table in the database.File: This file contains the filename that points to a particular file on disk.Here,it is used to represent NULL values, whereas %25 is to present a percent symbol. Data: Specially designed to hold encoded binary data contents.This excludes NULL values from the database. Below describes each column name and the type of data it holds.
Structure of BLOB DataĮach BLOB data contains two fields namely Type and Data.Ĭreate table table_name (., Blob_type, Blob_data)Įach column in a Blob type are meant for different data. The reason behind this is that most of the web browsers, Android devices, etc. From a forensic investigators point of view, these BLOB data contains crucial evidence regarding digital crime.
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Even database managers, do not have idea what the blob data contains and how to deal with. Any type of data which is in binary form appears similar for human eyes. Why BLOB is so Important?Īs talked above, BLOB data type contains binary data, which is not in readable form. This datatype is not only deals with SQLite, but also supported by most of other databases. Whereas BLOB data type stores binary data, which are typically images, videos, audio or even binary executable codes. Unlike Blob, all other data types stores a particular type of data. Common data types used in SQLite are NULL, INTEGER, REAL, TEXT and BLOB.
Its source code is available in public domain which can be used for commercial or private purpose. SQLite is one of the most commonly used database engine.
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