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02 MongoDB
MongoDB is a document-oriented database that stores data within: Documents: consist of key-valu...
01 Introduction
Document databases deviate from the entity-based denormalized data model of relational dbs and pr...
03 Neo4J
The most popular graph database is Neo4J, implemented in Java by Neo Technologies, and it has the...
02 Graph Databases
Motivations The table based structure of relational databases makes it hard to represent relation...
01 Graph Theory
Basic definitions The Graph is a data structure that was first used in 1736 to represent a city a...
03 Brief NoSQL history
MultiValue databases at TRW in 1965. DBM is released by AT&T in 1979. Lotus Domino released in 1...
02 Transactional Properties in NoSQL
Transaction is SQL, ACID In the relational world we are used to having the concept of a transacti...
02 RESTful API
Is a standardized resource based way of designing API. The RESTful API uses the available HTTP ve...
02 Relational Model
Keys Superkey: a set of attributes K is a superkey for a relation r if r does not contain two dis...
01 ER
Foundations An entity–relationship model (or ER model) describes interrelated things of interest ...
01 The Data-driven Virtuous Cycle
Collect Widely different data sources: Logs IoT Social Media Ecommerce Traditional businness da...