Azure storage - Non-relational data storage - Cosmos DB

4 important questions on Azure storage - Non-relational data storage - Cosmos DB

When would you use cosmos DB (5 reasons)

- Database that takes unstructured and non-relational data
- Have various DB-models to use
- Desire a fast response time
- Have globally disperse operation
- Don't want to deal with schema or index management.

Cosmos DB is a multi-model database. Which database models can it be configured to use?

- SQL core (document)
- Mongo DB (document)
- Gremlin (Graph)
- Cassandra (columns)
- Table API    (tables)

Can you descibe the general cosmos db structure, top to bottom?

1. Database
2. Containers
3.  Items. (collections, tables, graphs, function, triggers, conflicts, etc)
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What is a request unit?

A request unit is an abstract of system resources (cpu, IOPS and memory) that are required to perform the supported database operations. Reading a 1 KB item is 1 RU. However queries may require more RUs.

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