Using BLOB fields in Delphi datasets

Technically, BLOB fields are a special kind of fields in a dataset that can store a binary large object (BLOB) : raw binary data of arbitrary length. These data are in origin a picture or a file, transformed to Base64 code and stored into dataset’s records.

In Delphi (represented by TBlobField class), you can use this kind of fields in any dataset in both frameworks (VCL and FMX), to store and retrieve a picture or file in runtime.

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