Table: `ndb.sysdiagrams`#

Description#

No description available in database.

TODO: Expand this description with: - What data does this table store? - What is the business/research purpose? - How is this data collected or generated? - Are there any important caveats or data quality issues?

Table Structure#

Schema: ndb | Table Comment: No description available

Statistics#

Metric	Value
Row Count	0
Total Size	16 kB
Table Size	0 bytes
Indexes Size	8192 bytes

Relationships#

Primary Key: diagram_id

No foreign key relationships.

Referenced By:

TODO: Document which tables reference this table (will be auto-detected in validation).

Data Dictionary#

Column	Type	Nullable	Default	Constraints
`name`	character varying	✗	`-`	-
`principal_id`	integer	✗	`-`	-
`diagram_id`	integer	✗	`nextval('ndb.seq_sysdiagram...`	PRIMARY KEY
`version`	integer	✓	`-`	-
`definition`	bytea	✓	`-`	-

TODO: Review column descriptions and add comments where missing.

Usage Examples#

Example 1: Basic Selection#

-- Get recent records from sysdiagrams
SELECT *
FROM sysdiagrams
ORDER BY diagram_id DESC
LIMIT 10;

Purpose: Retrieve the 10 most recent records from sysdiagrams

Example 2: Count Records#

-- Count total records
SELECT COUNT(*) as total_records
FROM sysdiagrams;

Purpose: Get the total number of records in sysdiagrams

Example 3: Aggregate Data#

-- Aggregate records by principal_id
SELECT 
    principal_id,
    COUNT(*) as count
FROM sysdiagrams
GROUP BY principal_id
ORDER BY count DESC
LIMIT 10;

Purpose: Count records grouped by principal_id

TODO: Add more specific examples relevant to common research questions or operational tasks.

Data Quality Notes#

TODO: Document: - Known data quality issues - Validation rules - Expected data ranges - Update frequency and mechanisms - Any ETL processes that populate this table

Maintenance#

Data Owner: TODO: Assign owner
Update Frequency: TODO: Document frequency
Last Major Schema Change: TODO: Document when schema last changed

Table: ndb.sysdiagrams#