Why You Should Not Jump Too Early to NoSQL Databases – Part 2
Автор: Clarity N Confidence
Загружено: 2026-01-14
Просмотров: 3
This is a continuation of Part 1, going deeper into query execution models, MapReduce vs SQL, graph querying, and the long-standing impedance mismatch problem between object-oriented code and relational databases. This part focuses on how querying and processing actually work in SQL and NoSQL systems—and why SQL abstractions still offer strong advantages.
Note: Please watch Part 1 first to understand data models, relationships, indexing, and query optimizers.
MCQs for revision - coming soon
Table of contents:
00:00:02 | MapReduce vs SQL
00:13:58 | Explicit MapReduce in Mongo
00:18:41 | Is MapReduce Imperative or Declarative?
00:20:05 | Implicit MapReduce in Mongo (Aggregation Pipeline)
00:24:42 | Cypher Query in Graph NoSQL Databases
00:37:55 | Impedance Mismatch
00:38:37 | Object Relational Mapping (ORM)
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