Magazine Network - NoSQL database mobil 1 is a new concept and it is natural that new words to the

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Magazine Network - NoSQL database mobil 1 is a new concept and it is natural that new words to the vocabulary words and their associated databases and programmatically add. The more you become familiar with the most important words and keywords is a special case NoSQL.
Bigtable is a distributed mobil 1 database or Jdvlbzrg in 2006 as a database column based on Google File System (GFS) is made. Amazon Daynamvy Bigtable mobil 1 and Cassandra are direct parents. Cassandra properties of distributed mobil 1 data storage and disk arrays using SSTable is inherited from the database. Yahoo HBace database restore (clone) of the Bigtable. Google Bigtable full article can be read at the following address:
In Greek mythology, Cassandra was the daughter of King Priam and Queen Hkvba of the Trojan royal family. She was so beautiful that Apollo gave him the power to see the future. mobil 1 But when he did not accept mobil 1 this kind of love, Apollo cursed him to accurately predict what will happen in the future, but no one can say he does not believe. He saw the destruction of the city of Troy, but can not deal with this incident ... It Distributed database name from the legend that is selected. The data warehouse mobil 1 is a project of the Apache Foundation http://cassandra.apache.org address is available. During the early stages of its formation in January 2009. Key features of this database can be decentralized, elastic, fault-tolerant, stable, customizable, optimized for high-availability and pointed. The database has been designed from the outset to be highly scalable and easily on conventional servers that have been scattered in different Dytasntrhay, to be distributed. Companies like Digg, Facebook, Cloudkick, Cisco, IBM, Reddit, Rackspace, SimpleGeo, Ooyala, and OpenX will use this database.
Two or more copies mobil 1 (Instance) of Cassandra, who work in coordination with each other, called clusters. Gossip works to help people communicate with each other. When you introduce a new node to the desired mobil 1 cluster configuration, you must do a little work. Seed must first introduce a node. Then define the ports that need to communicate with Cassandra and Thrift Gossip them to listen. After your cluster is configured, you can use the Configuration Tool Node Tool for accuracy.
Column, the basic unit of information provided Mdldadhay is Cassandra. A triple combination mobil 1 of column name (sometimes called a key or key) is a value and a timestamp. Values mobil 1 with a timestamp column mobil 1 that database is provided by the client. The type and amount of keys, both byte arrays in Java (Java Byte Array) is. The timestamp data type is a type of long (Long) is primary. To avoid problems in multidisciplinary column Ghyrqabltghyyr (Immutable) are defined. Families of columns in a column (Column mobil 1 Families) are classified.
Stability means that a transaction never leaves the database in an inconsistent or invalid will and will not violate any of the integrity constraints. One of the critical aspects of the transactions in this case the properties of relational databases and ACID (acronym Atomic, Consistent, mobil 1 Isolated, Durable means atomic, consistent, isolated, and persistence) refers. Cassandra mobil 1 degree of relative stability is calculated based on the following: - N is the number of nodes that are copies mobil 1 of a data store. - W the number of nodes that must be received mobil 1 to confirm the correct data. - R is the number of copies when trying to access a data object in a read operation, contact is established. - In this case, if R + W is greater than N, we have high stability and conditional stability would be otherwise.
Cassandra is considered as a decentralized database because it does not define any Mrkzyay server and instead uses a peer to peer approach to prevent the occurrence of bottlenecks and create mobil 1 a central failure point. Decentralization in Cassandra is considered vital because it is possible to increase or decrease the scale of the Cass