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3.0
3.0
  • Welcome
  • Concept
  • SQLWATCH Database
    • Requirements
      • Permissions
      • Performance Overhead
      • Storage Utilisation
    • Installation
      • Install with dbatools
      • Install with SqlPackage
      • Install with SSMS
      • Deploy from source code
      • Optional Components
      • Upgrade
      • Removal
      • Downgrade
    • Configuration
    • Known Issues
      • Collation conflict
      • Database drift
      • Login failed error when running disk logger
      • Deadlock when creating database
    • Notifications
      • Checks
      • Actions
      • Reports
      • How To
        • Add or modify check
        • Add or modify action
        • Add or modify report
      • Process Flow
    • Large Environments
  • Central Repository
    • Requirements
      • Performance overhead on the remote instance
      • Permissions
    • Installation
      • Removal
      • Upgrade
    • Configuration
    • Known Issues
  • Power BI Dashboard
    • Requirements
      • Permissions
    • Installation
    • Configuration
    • Known Issues
      • Power BI Load Errors
    • Performance
  • Grafana Dashboard
    • Requirements
    • Installation
    • Configuration
  • Azure Log Analytics Dashboard
    • Concept
    • Requirements
    • Installation
    • Configuration
  • Design Decision
    • Relations
    • Trend Tables
    • Data Types
      • Real Type
    • Primary Keys
    • Data Compression
    • Configuration Items
    • Using Apply instead of Join
  • Reference
    • Data-Tier Application Package
  • Integrations
    • Send notifications to Slack and Teams
    • dbachecks
  • FAQ
    • How do I check if SQLWATCH is running OK?
    • I am not seeing any data in Power BI
    • Can I modify default checks?
    • The app_log is growing fast
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  1. Design Decision

Relations

PreviousConfigurationNextTrend Tables

Last updated 5 years ago

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Relation between tables are enforced with primary and foreign keys, with cascade actions where appropriate.

The exception are action and check tables, where we had to "detach" logger tables from config tables in order to import logger into central repository without also importing config tables. Configuration tables are defined for a local scope only and for that reason the sql_instance is not part of the primary key.

In this instance, cascade actions are handled by triggers:

Entity Relationship Diagram

SQLWATCH 2.3 ERD