geolocation database open source

Article title: open-source embedded database BerkeleyDB (1 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Although a C/S-based relat

With the development of Internet technology, the traditional relational database can not be satisfied with the storage and analysis of massive data, thus deriving a database NoSQL (not only SQL) which is different from the relational database.The more mature nosql in foreign countries have mongodb,cassandra,tokumx and so on, not listed.As far as I know, bat and other giants have their own nosql projects, so

whether the data in the database has changed at this time, in the WHERE clause, the original value of each column in the entire row is used as the judgment condition (each row of dataset passes through system. data . Datarowversion maintains four statuses. This prevents the sqldatasource control from returning the updated data in the database or the sqldatasource control after dataview (Dataset) is updated

November February 15 (Dai xunyan compiled): according to an external report, Oracle announced the acquisition of open source database vendor Sleepycat on Tuesday. This is the re-acquisition of open source database companies after

open-source databases. Few people have heard of sharding for commercial databases. The current industry trend is basically to embrace scale out and gradually release from scale up. 　　Sharding application scenarios Any technology can play its due role in a suitable situation. The same is true for sharding. Online games, Im, and BSP are suitable for sharding application scenarios. In common, abstract data ob

" Selectm). FirstOrDefault (); Zhangsan.password="678"; Db. Update (Zhangsan); //Delete Data vardata = db. Userinfo.firstordefault (m = M.username = ="John Doe"); if(Data! =NULL) {db. Delete (data); } //Commit a transactiondb.committransaction (); } Catch { //rolling back a transactiondb. RollbackTran

Label:sqlite-Open source, cross-platform, compact relational database-1 Learn SQLite database in 1 hours 1. Introduction SQLite is an open-source, embedded relational database that impl

Java Open Source Forum system http://javabbs.javaz.cn Project Address: http://www.freeteam.cn/ Database Information collection Starting with the FREECMS 2.1 support Through simple configuration can crawl target database information, support incremental collection, keyword replacement, timing collection, can collect a v

Naresh Kumar is a software engineer and passionate blogger who has a great interest in programming and new things, and is happy to share technical research with other developers and programmers. Recently, Naresh wrote about 12 well-known free, open source NoSQL databases, and analyzed the characteristics of these databases.Now that NoSQL databases are getting more and more popular, I've summed up some great

Open source database traffic audit MySQL SnifferMy most respected database security product is a traffic-based database audit, because it does not need to change the network structure, and the most critical is that it does not affect the performance of the

Tags: blog http io os using AR java for strongAmoeba (amoeba) project is an open source framework, launched in 2008 to launch a amoeba for MySQL software;This software is dedicated to MySQL's distributed database front-end agent layer, which mainly serves as the SQL routing function when the application layer accesses MySQL, and focuses on the development of the

Open source database connection pools in Java are available in the following ways:1, c3p0 c3p0 is an open source JDBC connection pool that is published in the Lib directory with Hibernate, including connection and statement to implement JDBC3 and JDBC2 extension specificatio

of a single-node database server. Resolve database extensibility issues.Related to Database extensibilitySpeaking of database extensibility, this is a very big topic. The current business data have their own extensibility solutions, in the past relatively mature, but with the rapid development of the Internet, will in

Based on this, server load balancer, read/write splitting, and high availability can be achieved. Compared with MySQL's official MySQL Proxy, the author emphasizes the convenience of amoeba configuration (XML-based configuration files, which are easier to write rules using SQLJEP syntax than MySQL Proxy based on lua scripts ).Amoeba is equivalent to a router for SQL requests. It aims to provide mechanisms for server load balancer, read/write splitting, and high availability, rather than full

PostgreSQL is an object-relational database management system (ORDBMS). It is also a free software database system with the most powerful features and the most complex features. it originated from the database research program of Berkeley (BSD) and is currently one of the most important open-

Label:Directly on the program interface, to understand what the overall workflow is like, for the server to hang up the test, the need for fixed IP, space about 10G (mainly BT seeds occupy space is too large), it is best to have SQL Server as a storage database, the current use of Access database as a test, Afraid of late data over million, the site query operation is very slow. If the program runs long eno