Table: `ndb.taxaalthierarchy`#

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	8192 bytes
Table Size	0 bytes
Indexes Size	8192 bytes

Relationships#

Primary Key: taxaalthierarchytypeid, taxonid

Foreign Keys:

taxonid → taxa.taxonid
highertaxonid → taxa.taxonid
taxaalthierarchytypeid → taxaalthierarchytypes.taxaalthierarchytypeid

Referenced By:

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

Data Dictionary#

Column	Type	Nullable	Default	Constraints
`taxaalthierarchytypeid`	integer	✗	`-`	FOREIGN KEY, PRIMARY KEY
`taxonid`	integer	✗	`-`	FOREIGN KEY, FOREIGN KEY, PRIMARY KEY
`highertaxonid`	integer	✗	`-`	-

TODO: Review column descriptions and add comments where missing.

Usage Examples#

Example 1: Basic Selection#

-- Get recent records from taxaalthierarchy
SELECT *
FROM taxaalthierarchy
ORDER BY taxaalthierarchytypeid DESC
LIMIT 10;

Purpose: Retrieve the 10 most recent records from taxaalthierarchy

Example 2: Count Records#

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

Purpose: Get the total number of records in taxaalthierarchy

Example 3: Join with taxa#

-- Join with related table
SELECT 
    t1.*,
    t2.*
FROM taxaalthierarchy t1
INNER JOIN taxa t2 
    ON t1.taxonid = t2.taxonid
LIMIT 100;

Purpose: Retrieve taxaalthierarchy records with related data from taxa

Example 4: Aggregate Data#

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

Purpose: Count records grouped by taxonid

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.taxaalthierarchy#