NoSQL is a lie

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Who am I?

Mike Elsmore

Developer Advocate

mike.elsmore@uk.ibm.com

< rant >

NoSQL

Catch All

try {
    SQL
} catch (Exception $e) {
    Must be NoSQL
}

Not SQL

It's a nasty backronym

SQL on NoSQL

SPARQL

CQL (Cassandra Query Language)

Couchbase SQL

Schemaless

Yes, they'll accept anything…but

Schema

Because how else do you know what you’re getting out?

No NoSQL Experts

Many Primary Types

So many distinct types of databases

"X" Expert

</ rant >

Enter CAP Theorem

Consistency, Availability and Partition Tolerance

Consistent

In = Out

Available

Partition Tolerant

Know's where to look

Pick two?

Uncertainty principle

Why is this important?

History

Consistent & Available

Ignoring the Partition Tolerance by being in the same place

Distributed Systems and Databases

Needs to know what machine X data is on

Partition Tolerance & ___________

Design Decision

The reason why most NoSQL Databases are either AP or CP

Other Database Types

Object, Tabular, Tuple, Triple/Quad store (RDF), Multimodel, Etc

Skipping Multi-model

Different indexing & lookups on the same stored data.

Questions?