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Role and Support of Image Processing in Big Data
Published in Ankur Dumka, Alaknanda Ashok, Parag Verma, Poonam Verma, Advanced Digital Image Processing and Its Applications in Big Data, 2020
Ankur Dumka, Alaknanda Ashok, Parag Verma, Poonam Verma
Apache Hbase (Hadoop database) is a column-oriented data model which provides zero downtime during node failure and thus provides good redundancy. It provides concurrency by means of optimistic concurrency. CouchDB is a document-oriented data model which also provides concurrency by means of optimistic concurrency and also provides secondary indexes. MongoDB is also a document-oriented data model which provides nearly the same features as CouchDB. Apache Cassandra is a column-oriented data model which provides zero downtime on node failure and hence provides good redundancy to the system. It also provides concurrency to the system. Apache Ignite is a multi-model data model which provides nearly all the features such as zero downtime on node failure, concurrency, and secondary indexes and hence mostly in use. Oracle NoSQL Database is a key-value-based data model which provides concurrency and secondary indexes.
Building Permissioned Blockchain Networks Using Hyperledger Fabric
Published in Sandeep Kumar Panda, Ahmed A. Elngar, Valentina Emilia Balas, Mohammed Kayed, Bitcoin and Blockchain, 2020
K. Varaprasada Rao, Mutyala Sree Teja, P. Praneeth Reddy, S. Saikrishna
The state database is simply an indexed view of the transactions committed. Thus, it can be regenerated from the string at any time. The state database will automatically accept new transactions LevelDB is Hyperledger Fabric’s default key/value state repository it stores key-value pairs.CouchDB is a LevelDB substitute. In comparison to LevelDB, CouchDB stores data in JavaScript Object Notation (JSON) format. CouchDB supports main, composite, key scope, and full data-rich queries.
An Enhanced Entity Model for Converting Relational to Non-Relational Documents in Hospital Management System Based on Cloud Computing
Published in IETE Technical Review, 2022
A. Samydurai, K. Revathi, L. Karthikeyan, B. Vanathi, K. Devi
In addition to this, the comparative analysis of various approaches namely the MySQL, MongoDB, as well as Couch DB is plotted for scalability rate. CouchDB uses views as the primary tool for running queries and creating reports from stored document files. Here, the scalability played a vital role in cloud computing and it provides an essential solution for various problems in databases. The experimental analyses are carried out for various databases, and the analyses reveal that the MongoDB outperforms various other databases. Scalability is the ability of a system that is capable of handling the load (i.e., patient’s records) without impact on performance or for the available resources to be readily increased. Figure 8 provides the graphical representation for scalability rate with respect to various databases.