Relational Query Languages (SQL)
Declarative languages for defining, querying, and updating relational databases at enterprise scale.
Core metadata
- ID: relational_query_languages_sql
- Era: Modern
- First known date: 1974 (exact)
- Region: United States and global database systems
- Review status: source_checked
- Maturity: N/A
Prerequisites
- Algorithms & Computation Theory (algorithms_computation_theory)
- Databases (Relational DBMS) (databases_relational_dbms)
- Software Engineering (software_engineering)
Dependents
- None.
Fields
- None.
Node sources
- Sequel: A structured english query language (IBM Research, 1974, primary_paper) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 75%
- Prerequisite sources: 3
- expert_inference: 2
- primary_source: 1
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Databases (Relational DBMS) (databases_relational_dbms) | required | 88% | primary_source | SEQUEL was introduced as a data sublanguage for accessing data in an integrated relational database. |
|
| Algorithms & Computation Theory (algorithms_computation_theory) | enabling | 68% | expert_inference | Algorithms & Computation Theory provides a capability that enables this technology without being the only possible path. |
|
| Software Engineering (software_engineering) | enabling | 68% | expert_inference | Software Engineering provides a capability that enables this technology without being the only possible path. |
|
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