postgresql nosql

that the MySQL market value will reach $664 million in 2015, and the CAGR is "healthy" by 40%.As you can see, the only "unhealthy" factor in this chart above is the rapid rise of nosql. Aslett pointed out that 12.7% of the abandoned MySQL enterprise directly into the embrace of NoSQL, but this has little impact on MySQL installation base. The most common MySQL replacement is actually

Comparison of eight Nosql database systems: KristfKovcs is a software architect and consultant who recently published an article comparing various nosql databases. The article was compiled by Tang youhua, an agile translator. For more information, see post-Article declaration. Although SQL database is a very useful tool, after 15 years of outstanding performance, the monopoly will soon Comparison of eight

: CREATE TABLE books(number isbn13, title varchar (100))INSERT INTO books( "number" , title) VALUES ( '978-03' , 'Rework' ); The INSERT statement will be executed incorrectly because the input string is not a valid ISBN number, and the following statement can be correctly executed: INSERT INTO books( "number" , title) VALUES ( '978-0307463746' , 'Rework' ) If you want to convert a 10-bit ISBN to 13-bit, you can use the isbn13 () function: INSERT INTO books( "number" , title) VALUES (isbn13( '03

Label:"NoSQL essence" Reading notes, reproduced please indicate the source "Jiq Technical Blog" The relational database has become a part of the computer culture because of its many advantages: 2 get persisted data Data can be persisted to disk, and it is easy to access one of the small pieces of data. 2 concurrency The relational database has the concept of "transaction", which effectively guarantees the consistency of multiple programs accessing

First, the concept of SQL (structured Query Language) database, refers to the relational database.　　Main representative: SQL Server,oracle,mysql (open source), PostgreSQL (open source). NoSQL (not only SQL) refers to a non-relational database.Main representative: MONGODB,REDIS,COUCHDB. Second, the difference1. Storage modeSQL data exists in a structure-specific table, and

The difference between NoSQL and NoSQL is much greater than the difference between different SQL databases. Therefore, software architects must select a suitable NoSQL from the very beginning of the project. The difference between NoSQL and NoSQL is much greater than that be

. Data Model refers to the data storage method, which has several schools, such as relations, key values, columns, documents and images. In their respective implementations, relational databases include MySQL, PostgreSQL, and Oracle, and key-value databases include memcached, membase, Riak, and Redis, columnar databases include HBase, Cassandra, and Hypertable, document databases include MongoDB and CouchDB, and image databases include Neo4J. When sel

Abstract: Although SQL database is a very useful tool, after 15 years of outstanding performance, the monopoly will be broken. This is only a matter of time: I was forced to use relational databases, but I finally found that I could not meet my needs. For details, see my IT-Homer blog: Comparison of eight mainstream NoSQL databases NoSQL is a brand new revolutionary database operation. Abstract: Although SQ

In the past few years, relational databases have been the only choice for data persistence. Data workers only consider filtering these traditional databases, such as SQL Server, Oracle, or MySQL. You can even make some default options. For example, if you use. net, you generally select SQL server. If you use Java, you may prefer Oracle, Ruby is MySQL, and python is PostgreSQL or MySQL. The reason is simple: the robustness of relational databases has b

Kristóf Kovács, a software architect and consultant, recently released an article comparing various types of NoSQL databases. Although the SQL database is a very useful tool, the monopoly is about to be broken after a 15-year solo show. It was only a matter of time: forced to use relational databases, but found that the inability to adapt to demand was too numerous. But the differences between the NoSQL d

Label:Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a matter of time: forced to use relational databases, but eventually found to be unable to adapt to the needs of the numerous. But the difference between NoSQL databases is far more than two of the differences between SQL databases. This means that the Software architect should choose a suitable

This article by Bole Online-Tang Yuhua translation from Kristóf Kovács. Welcome to the technical translation team. Please refer to the requirements at the end of this article for reprint. Guide: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases. Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a

Guide: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases.Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a matter of time: forced to use relational databases, but eventually found to be unable to adapt to the needs of the numerous.But the difference between