Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add nWave-ai/nWave --skill nw-database-technology-selectiongit clone --depth 1 https://github.com/nWave-ai/nWaveWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nwave-ai/nwave/nw-database-technology-selection)<a href="https://agentmods.dev/skills/nwave-ai/nwave/nw-database-technology-selection"><img src="https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-database-technology-selection/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/nwave-ai/nwave/nw-database-technology-selection"><img src="https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-database-technology-selection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00038 | $0.01210 |
| Opus 5.5 | $0.00015 | $0.00484 |
| Sonnet 5.5 | $0.00008 | $0.00242 |
| Haiku 4.5 | $0.00004 | $0.00121 |
Grade A, and why
nw-database-technology-selection scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Database Technology Selection
Selection Decision Framework
Start with these questions:
- Primary access patterns? (point lookups, range queries, graph traversals, full-text search)
- Consistency guarantees? (strong ACID vs eventual consistency)
- Expected scale? (data volume, concurrent users, read/write ratio)
- Query complexity? (key-value, complex joins, aggregations, graph traversals)
- Latency targets? (sub-ms caching, ms OLTP, second-range analytics)
- Compliance requirements? (GDPR, CCPA, HIPAA, data residency)
RDBMS Selection Guide
PostgreSQL
Strengths: Full ACID, advanced cost-based optimizer, rich indexes (B-tree, Hash, GiST, GIN, BRIN), JSONB | Best for: complex queries, mixed OLTP/analytics, geospatial (PostGIS), JSON+relational hybrid | Scaling: read replicas, partitioning, PgBouncer, Citus for horizontal | Watch: write-heavy needs tuning, vertical scaling limits
Oracle
Strengths: RAC clustering, Data Guard, Flashback, mature optimizer, partitioning | Best for: enterprise OLTP, mission-critical with vendor support, large-scale DW | Scaling: RAC horizontal, partitioning, Active Data Guard read replicas | Watch: licensing cost, vendor lock-in
SQL Server
Strengths: BI integration (SSRS/SSAS/SSIS), Always On AG, TDE built-in, columnstore indexes | Best for: Microsoft ecosystem, BI-heavy, hybrid OLTP/analytics | Scaling: Always On AG for HA, read-scale replicas, partitioning | Watch: Windows-centric, licensing model
MySQL
Strengths: Simplicity, wide adoption, InnoDB ACID, good read performance, easy replication | Best for: web apps, read-heavy, simple transactional systems | Scaling: primary-replica, Group Replication, MySQL Router | Watch: less sophisticated optimizer than PostgreSQL, limited window functions in older versions
NoSQL Selection Guide
Document Stores (MongoDB, Couchbase)
JSON-like documents, flexible schemas | Best for: CMS, catalogs, user profiles, rapid prototyping | Query: MongoDB aggregation pipeline, Couchbase N1QL | Indexing: compound (ESR rule: Equality-Sort-Range), text, geospatial | Trade-offs: flexible schema vs consistency enforcement, $lookup joins expensive
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 75 lines · 38 tokens per session scan A 9c05a1dc0f39
nw-database-technology-selection is a skill published in the GitHub repository nWave-ai/nWave (622 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 1,210 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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