Apache MRUnit lets developers write unit tests that can be used in detecting problems with MapReduce jobs before their run on the database itself.By unit testing Hadoop's MapReduce jobs, developer can avoid useless resource consumption, a good habit to...
Apache Commons DbUtils is not an ORM built on JDBC, but merely a set of tools that upgrade JDBC with even more features, developed by the fine folks at the famous and hugely prodigious Apache Foundation.DbUtils simplifies the process of running a query or...
Apache Sqoop is a must-have tool for every database administrator, letting them easily move data between the Hadoop NoSQL database to more classic database systems like PostgreSQL, MSSQL, MariaDB, or MySQL - a.k.a. relational databases.Sqoop basically...
Apache CouchDB was initially developed at IBM and donated later on to the Apache Software Foundation.Compared to other databases around, CouchDB is still very young, but this has not stopped it from gathering quite a following in its short lifespan.The...
Apache Accumulo is a mashup of various technologies, from Google's BigTable, to Apache's Hadoop, Thrift and Zookeeper.Compared to Google's BigTable system, Accumulo features a few improvements of its own.These include table cell-based access restrictions,...
Apache JDO is a Java API that provides easy & well documented methods for storing, accessing and manipulating persistent data.This kind of data is stored using classic POJOs (simple Java objects) and will allow developers to store some of their...
Apache Torque is a middle layer that stands between your Java code and the database server.It works by taking custom Torque Java objects and converting them into compliant SQL code that can be run on the database.Besides just running SQL statements,...
A data warehouse system is a database used for reporting and data analysis. Apache Tajo is the implementation of this concept, but specifically tailored to work with Hadoop, a powerful NoSQL database developed by Yahoo and currently managed by the Apache...
Apache MetaModel supports most of the major database systems around and is focused on providing the be-all end-all interface for running database operations in Java.Using MetaModel reduces the learning curve needed when working with multi-database...
Apache Cassandra was initially built by Facebook for their own servers and services, using principles developed by Google and Amazon for BigTable and DynamoDB. Currently the project was donated to the Apache Foundation who continues to developed it...
