simple nosql database

pros and cons of analysis, I also basically agree. Relationship Advantage:1. Transaction processing---maintaining consistency in data;2. Due to standardization, the cost of updating the data is very small (the same field is basically one place);3. You can perform complex queries such as join. Relational disadvantage:1. Expansion difficulties: Because of the existence of such a join table query mechanism, making the database in the expansion of the

Key-Value Store databaseTemporary: as memcached. The temporary key-value database stores the data in memory, which in two cases results in the loss of data, the first is the power outage, but the data content exceeds the memory size. The benefits of this treatment are very fast.Permanent type: such as Tokyo Tyrant, flare and RomaThe two are both types: Redis. Redis first data in memory, and then meet certain conditions (the default is 15 minutes more

In-depth analysis of NoSQL database distributed algorithms (graphic details), nosql text Although the NoSQL movement has not brought about fundamental technological changes to distributed data processing, it still triggers overwhelming research and practices on various protocols and algorithms. In this article, I will

the time, I later on the Internet access to more information, found that my understanding is only partial. (Even the author's understanding is wrong, such as the author of 2.1.5 The consistency of the simple understanding of the role of check constraints) in fact, the primary foreign KEY constraints, check constraints are the scope of database integrity (why is the integrity of the acid in the no longer?)

Tags: relational data table NoSQL database L database Combat div operation Field Why NoSQL is produced: The fact that relational databases are not good at doing so is the reason why NoSQL is Born: Large number of data write operationsThe book is written "la

Label:In the past, we only needed to learn and use a database technology to do almost all of the database application development. Because the mature and stable relational database products are not many, and for you to choose the free version is even less, so the Internet domain basically chose the free MySQL database.

join operations in SQL. In other words, the design of your project and the need for data will have a big impact. The design of a good SQL database will certainly perform much better than a poorly designed NoSQL database, and vice versa.SQL VS NoSQL ScaleAs the amount of data grows, we may find it necessary to distribu

yesterday. The NoSQL database lacks ad hoc query and data analysis tools. Even a simple query requires professional programming skills, and traditional BI tools do not provide a connection to NoSQL. HIVE and PIG to address this problem by providing a more convenient way to access data, access to data stored on the H

enable users to use their knowledge across systems and to support third-party attachments and tools.3. SQL can be extended, and is versatile and time validated, which can solve problems from fast write-driven transmission to scanning intensive in-depth analysis.4. SQL is an orthogonal form of data rendering and storage, and some SQL systems support JSON and other structured object formats, with better performance and more functionality than NoSQL.Although N