A database is an organized collection of structured information, or data, typically stored electronically in a computer system and controlled by a database management system (DBMS).
Polyglot persistence is a data storage practice that recognizes the variety of data storage needs and uses multiple data storage technologies in practice, chosen based upon the use of the data. Multi-model databases are designed to support multiple data models against a single, integrated back end providing the modeling advantages of polyglot persistence while reducing the complexity. Read Multi-model Databases: A New Journey to Handle the Variety of Data.
| Polyglot | Multi-model |
|---|---|
| Large product variety | Small product variety |
| Complex deployment | Single system deployment |
| Each data store scales independently | Common resource pool for scaling |
| Duplicate and sync across data stores | Interconnected data |
| Manage data set relationships across data sets | Entire domain is represented in the same data store |
| Each data store is optimized | Eliminates cross system latency |
| Can do some work in parallel | Can leverage caching |
Read Building on Multi-Model Databases.
A database model defines the logical structure of a database. Common models include:
Data is represented as nodes and the relationships between them as edges.
Structured query language.
Not only structured query language