Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| instrument_id | serial | 10 | √ | nextval('dic_instrument_instrument_id_seq'::regclass) |
|
|
PK. Unique ID. Generated by the database. |
||||
| instrument_name | varchar | 250 | null |
|
|
Name of the instrument |
|||||
| company | varchar | 250 | √ | null |
|
|
The company that manufactures the instrument. Note that company names change through time, and mergers are common - this column may not accurately reflect the name of the company at the time of manufacture |
||||
| instrument_type | varchar | 2147483647 | √ | null |
|
|
Type of instrument e.g. XRD, ICP:MS, Microwave |
||||
| instrument_notes | varchar | 2147483647 | √ | null |
|
|
Notes about the instrument |
||||
| timestamp_created | timestamptz | 35,6 | now() |
|
|
||||||
| timestamp_modified | timestamptz | 35,6 | √ | now() |
|
|
|||||
| instrument_url | varchar | 2147483647 | √ | null |
|
|
URL for the instrument |
Indexes
| Constraint Name | Type | Sort | Column(s) |
|---|---|---|---|
| instrument_id | Primary key | Asc | instrument_id |
| instrument_instrument_name_key | Must be unique | Asc | instrument_name |
Relationships
Close relationships within degrees of separation
