NoSQL databases: a step to database scalability in web environment

摘要

Purpose - The paper aims to focus on so-called NoSQL databases in the context of cloud computing. Design/methodology/approach - Architectures and basic features of these databases are studied, particularly their horizontal scalability and concurrency model, that is mostly weaker than ACID transactions in relational SQL-like database systems. Findings - Some characteristics like a data model and querying capabilities of NoSQL databases are discussed in more detail. Originality/value - The paper shows vary different data models and query possibilities in a common terminology enabling comparison and categorization of NoSQL databases. Cloud computing ;NoSQL database ;CAP theorem ;Weak