feat: database-administrator skill package v0.1.0

references/skills.md

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+# Competences — database administrator
+
+Source: ESCO v1.2.1 occupation-skill relations (http://data.europa.eu/esco/occupation/8c57af09-719c-42b3-be40-6ed4946236cc).
+
+## Essential
+
+- **administer ICT system** (skill/competence)
+- **apply company policies** (skill/competence)
+- **balance database resources** (skill/competence)
+- **create data models** (skill/competence)
+- **data models** (knowledge)
+- **data quality assessment** (knowledge)
+- **data storage** (knowledge)
+- **database development tools** (knowledge)
+- **database management systems** (knowledge)
+- **define database physical structure** (skill/competence)
+- **design database backup specifications** (skill/competence)
+- **design database scheme** (skill/competence)
+- **distributed computing** (knowledge)
+- **domain name service** (knowledge)
+- **information structure** (knowledge)
+- **interpret technical texts** (skill/competence)
+- **maintain database performance** (skill/competence)
+- **maintain database security** (skill/competence)
+- **manage database** (skill/competence)
+- **operate relational database management system** (skill/competence)
+- **perform backups** (skill/competence)
+- **perform ICT troubleshooting** (skill/competence)
+- **query languages** (knowledge)
+- **resource description framework query language** (knowledge)
+- **system backup best practice** (knowledge)
+- **use an application-specific interface** (skill/competence)
+- **use databases** (skill/competence)
+- **use scripting programming** (skill/competence)
+
+## Optional
+
+- business intelligence (knowledge)
+- data engineering (knowledge)
+- DB2 (knowledge)
+- design database in the cloud (skill/competence)
+- estimate duration of work (skill/competence)
+- execute ICT audits (skill/competence)
+- Filemaker (database management systems) (knowledge)
+- IBM Informix (knowledge)
+- implement a firewall (skill/competence)
+- implement anti-virus software (skill/competence)
+- implement ICT security policies (skill/competence)
+- LDAP (knowledge)
+- LINQ (knowledge)
+- manage cloud data and storage (skill/competence)
+- MarkLogic (knowledge)
+- MDX (knowledge)
+- Microsoft Access (knowledge)
+- MySQL (knowledge)
+- N1QL (knowledge)
+- ObjectStore (knowledge)
+- online analytical processing (knowledge)
+- OpenEdge Database (knowledge)
+- Oracle Relational Database (knowledge)
+- PostgreSQL (knowledge)
+- protect personal data and privacy (skill/competence)
+- provide ICT support (skill/competence)
+- provide technical training (skill/competence)
+- quality assurance methodologies (knowledge)
+- remove computer virus or malware from a computer (skill/competence)
+- SPARQL (knowledge)
+- SQL Server (knowledge)
+- support ICT system users (skill/competence)
+- Teradata Database (knowledge)
+- TripleStore (knowledge)
+- use automatic programming (skill/competence)
+- use back-up and recovery tools (skill/competence)
+- use different communication channels (skill/competence)
+- use spreadsheets software (skill/competence)
+- XQuery (knowledge)
+
+<!-- market-evidence -->
+
+## Market evidence (job-ad analysis, 56 ads, as of 2026-07-10)
+
+Share of analyzed job ads mentioning the item (threshold ≥ 20 %). Source: JSearch/Adzuna APIs.
+
+### Hard skills
+
+- database administration — **66 %**
+- performance tuning — **48 %**
+- data modeling — **39 %**
+- backup and recovery — **29 %**
+- disaster recovery — **29 %**
+- database design — **21 %**
+
+### Responsibilities
+
+- database administration — **27 %**
+
+<!-- market-evidence -->