As a software developer or DBA, one of the essential tasks is to deal with databases, such as MS SQL Server, MySQL, Oracle, PostgreSQL, MongoDB, and so on. As we all know, MySQL is currently the most widely used and the best free open source database, in addition, there are some you do not know or useless but excellent open source database, such as PostgreSQL, MongoDB, HBase, Cassandra, Couchba ...
1. Languages used in COUCHDB: Erlang features: DB consistency, easy to use license: Apache protocol: http/rest bidirectional data replication, continuous or temporary processing, processing with conflict checking, therefore, The use of Master-master replication (see note 2) mvcc– write without blocking read operation Pre-save version crash-only (reliable) design requires data compression view: Embedded mapping/Reduce formatted view: List display support for server ...
Berkeley DB (LIBDB) is an industry-leading open source, embedded storage engine that provides embedded databases that support traditional client/server applications. It includes B + trees, queues, extended linear hashes, access methods for fixed and variable length records, processing, locking, logging, shared memory caching, database recovery, and synchronization of highly available systems. DB supports C, c+, C #, Java, PHP, and Perl APIs. It supports data in key-value pairs (NoSQL), SQL, and Java object formats. It is suitable for ...
DataNucleus Access Platform is a compatible standard Java data Persistence Framework, fully compatible with JDO1, JDO2, JDO2.1, JDO2.2, JDO2.3, and JPA1 Java standards. Provides a REST based API. It allows access to all common database servers, including LDAP, Neodatis, JSON, Http://www.aliyun.com/zix ...
"51CTO exclusive feature" 2010 should be remembered, because the SQL will die in the year. This year's relational database is on the go, and this year developers find that they don't need long, laborious construction columns or tables to store data. 2010 will be the starting year for a document database. Although the momentum has been going on for years, now is the age when more and more extensive document databases appear. From cloud-based Amazon to Google, a number of open-source tools, along with the birth of Couchdb and MongoDB. So what ...
Recent discussions about http://www.aliyun.com/zixun/aggregation/22.html "> The future of the relational database have been growing, and 51cto.com has previously reported on whether the end of the relational database has arrived" and The fundamental problem analysis of relational database is widely concerned. Today we introduce a new document-type database MONGO. MONGO is a high-performance, open source, modeless document database, it's in many scenarios ...
Orientdb is an open source, non relational database management system. It is used under general hardware and can be stored at the speed and capacity of 150,000 files per second. It is written in Java and belongs to a document database that supports acid Tx, http://www.aliyun.com/zixun/aggregation/16666.html ">indexes, asynch queries, SQL Layer, clustering, etc., support A ...
Big faceless The generator 1.1.51 This version adds an optional external markup <pdfset>, which is merged into a number of smaller PDF files. Increased xinclude support, including conversion from external source to source. Graphics in the 2nd version of the graphics library can now be embedded directly into the report using the Chart tag library syntax generator. The graphics library must still be authorized separately. This version adds "Pre-line" as a valid "blank" attribute value. Increase through ...
H2 DB EngineH2 is a database management software that is written in Java and is a JDBC API tool for SQL database engine. The software has three modes to choose from: Embedded, server-type, cluster-mode. Also includes browser-based console applications that have a strong security feature that supports disk and in-memory databases and tables. H2 Database Engine 1.3.166 This version fixes an error that may result in wide columns (columns larger than half of the page size). Soft ...
H2 DB EngineH2 is a database management software. H2 is the JDBC API tool for SQL database engine written in Java. There are three modes to choose from: Embedded, server, cluster mode. Also includes browser-based console applications. Databases have a strong security feature. also supports disk and in-memory databases and tables. The H2 database Engine 1.3.158 version Repairs the problem between CLOB or BLOB data and databases. Compatible with the R programming language ...
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