# Version matrix

> English and Russian source archive matrix for PGPRO 培训.

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LLMS index: [llms.txt](/en/llms.txt)

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This page records the public archives fixed by SHA-256. PDF copyright years, PDF creation time and HTTP Last-Modified are kept as separate signals.

| Course | Baseline | English | Russian | Topics |
| --- | --- | --- | --- | ---: |
| [DBA1](/en/dba1/) | English | 16 | 16 | 17 |
| [DBA2](/en/dba2/) | English | 16 | 16 | 18 |
| [DBA3](/en/dba3/) | English | 16-20260917 | 16 | 9 |
| [DBS](/en/dbs/) | Русский | missing | 16 | 8 |
| [DEV1](/en/dev1/) | English | 16 | 16 | 21 |
| [DEV2](/en/dev2/) | Русский | missing | 16 | 21 |
| [PGPRO](/en/pgpro/) | Русский | missing | 16 | 23 |
| [QPT](/en/qpt/) | English | 16-20251018 | 16 | 17 |

The current English archives cover DBA1, DBA2, DBA3, DEV1 and QPT. Russian archives cover all eight courses. English routes remain present for DBS, DEV2 and PGPRO even though no current English archive was found.