January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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Columnar databases
Columnar or column-oriented databases are based on columns. Data in a certain column in a two-dimensional relation is stored together.
Unlike relational databases, adding columns is inexpensive and is done on a row-by-row basis. Rows can have a different set of columns. Tables can benefit from this structure by eliminating the storage cost of the null values. This model is best suited for distributed databases.
HBase is one of the most famous columnar databases. It is based on the Google Bigtable storage system. Column-oriented databases are designed for huge data scenarios, so they scale up easily. For example, Facebook uses HBase to power their message infrastructure. For small datasets, HBase is not a suitable architecture. ...
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