Versioning Phase 7 - Backend Refactoring, Vorbereitungen für spätere Phasen

Siehe caosdb-server#358 (closed)

Depends

• caosdb-server#360 (closed)

DoD

Alles in caosdb-mysqlbackend:

• Refactoring entity_version: _is_head spalte hinzufügen für Partitioning (und einfache Suche nach HEAD).
• Refactoring: archive_*_data Tables in Partitions der normalen *_data Tables umwandeln.
  • HEAD partition für aktuellste Version (_is_head = TRUE)
  • OLD partition für alte Versionen (_is_head = FALSE)
  • Query: Als rückwärtskompatible Implementation vorerst nur die HEAD Partition auswerten.
• Refactoring der procedures/functions die das Kopieren der Daten von HEAD nach OLD (ehemals *_data nach archive_*_data) übernehmen.

assigned to @timm

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marked the checklist item Refactoring der _iversion Nummer: MAX_INT ist HEAD. (Für die einfachere Suche nach HEAD und das Partitionieren) as completed

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added 7h 42m 12s of time spent at 2020-05-29

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changed milestone to %Unpaid versioning 2020

mentioned in issue caosdb-server#270

mentioned in issue caosdb-server#358 (closed)

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mentioned in issue caosdb-server#358 (closed)