# Databases

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Category: Technology
Slides: 33
Updated: 2026-05-15T22:19:32.512Z
Tags: technology, databases

## Summary

A system for organising structured data so that it can be stored durably, queried flexibly, and modified safely by many programs at once. Key sections include: Data bases. _; /* opening */ What a database is.; /* chapter i */ Files, records, and pain.; /* chapter ii */ Hierarchies and IBM IMS.; /* chapter iii */ Codd's paper.; /* chapter iv */ The relational algebra.; /* chapter v */ SQL.; /* chapter vi */ Oracle.; /* chapter vii */ IBM's response.; /* chapter viii */ Stonebraker and Berkeley..

## Slide Outline

1. Data bases. _
2. /* opening */ What a database is.
3. /* chapter i */ Files, records, and pain.
4. /* chapter ii */ Hierarchies and IBM IMS.
5. /* chapter iii */ Codd's paper.
6. /* chapter iv */ The relational algebra.
7. /* chapter v */ SQL.
8. /* chapter vi */ Oracle.
9. /* chapter vii */ IBM's response.
10. /* chapter viii */ Stonebraker and Berkeley.
11. /* chapter ix */ MySQL.
12. /* chapter x */ The OLTP/OLAP split.
13. /* chapter xi */ Star and snowflake.
14. /* chapter xii */ The NoSQL explosion.
15. /* chapter xiii */ Document databases.
16. /* chapter xiv */ Key–value stores.
17. /* chapter xv */ Bigtable's children.
18. /* chapter xvi */ Graph databases.
19. /* chapter xvii */ The CAP theorem.
20. /* chapter xviii */ Eventually vs. strongly consistent.
21. /* chapter xix */ The return of consistency.
22. /* chapter xx */ ACID and BASE.
23. /* chapter xxi */ Distributed databases.
24. /* chapter xxii */ The AI moment.
25. /* chapter xxiii */ Time-series databases.
26. /* chapter xxiv */ B-trees and LSM trees.
27. /* chapter xxv */ Query optimisation.
28. /* chapter xxvi */ Indexes, sharding, replication.
29. /* chapter xxvii */ Snowflake, BigQuery, Databricks.
30. /* chapter xxviii */ Where things stand.
31. /* chapter xxix */ Twenty-five works.
32. /* chapter xxx */ Watch & read.
33. // end of deck

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