Speed up to 3000 database backup file analysis

Up to 3000 of the database is MSSQL, the backup database is actually used after the backup databases command files and then compressed with makecab, in fact, the mszip format, after the addition of the following file header obtained.

A.----------------4C.
SuperData SQL Server Backup File hex text +

02 00//This is also unknown +

The database version number of the 4-byte set, such as 08 00 00 00, is SQL2000 's SQL2008, 0A 00 00 00.
4-byte set of database product code length + product Code//In the database name, for example, Sd[11101]_ account set code in square brackets, the code can be found in the Accoptions table PRODUCTID field corresponding value
4-byte account set code length + account set code
4 bytes Company Name length + company Name
4-byte Cab Compressed database length + CAB compressed data

This is a database backup format of up to 3000, up to 5000, 7000, and some V-series database backup formats using standard ZIP compression, which can be called "Encryption" and later updated

Speed up to 3000 database backup file analysis