Selecting a database is a bit like picking a religion. There are pros and cons to each, and the discussions run hot and heavy. With the rise of the big data phenomenon, adherents to the NoSQL and ...

Relational database management systems (RDBMS) rely on an optimizer (or relational optimizer) that transforms SQL statements into executable code. Before any SQL statement can be run by the RDBMS, the ...

Nowadays, huge volumes of unstructured data are generated, and this cannot be restricted to standardized text inputs for the RDBMS. For example, every corporate entity has applications that generate ...

在90年代，一个网站的访问量一般都不大，用单个数据库完全可以轻松应付。 在那个时候，更多的都是静态网页，动态交互类型的网站不多。 上述架构下，我们来看看数据存储的瓶颈是什么? 后来，随着访问量的上升，几乎大部分使用MySQL架构的网站在数据库上 ...

A relational database is a set of formally described tables from which data can be accessed or reassembled in many different ways without having to reorganize the database tables. The standard user ...

Many people associate open source data framework Hadoop with managing truly massive amounts of data. And with good reason: Hadoop storage is used by Facebook and Yahoo, which many people (rightly) ...