Essay on Database Model Of Column Family Database

Essay on Database Model Of Column Family Database

Length: 707 words (2 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

• Key-Value Stores
Key-value stores are designed for storing data in flexible and schema-less way. In these databases, data is stored as a list of keys with their corresponding values. All keys are unique and data access is achieved by means of key-value association. In addition, all keys are stored in a hash table to provide quick access for them. Values may contain actual information (raw data), or they may contain another set of keys. Key-value stores provide high concurrency, fast lookups and massive storage. These features make them suitable for application tasks like managing user profiles or sessions or retrieving product names. There are four common implementation of key-value stores which are Riak, Radis, Amazon 's Dynamo, and Voldemort.
• Column-Family Stores/Column Oriented Stores
The data model of column-family databases is similar to relational database model. Column-family database could be considered as a specific type of key-value pair model. Data is structured in columns that may be countless. Column-family databases consist of the following aspects:
• Column is represented as a pair of key and value. It is an atomic unit of information supported by the database.
• Super-column group associated columns together.
• Column family consists of several super-columns. It is similar to a table in relational databases.
There are two main differences between column-family and relational databases. First, a new column or super column can be added to the design easily whenever necessary. Second, each row in the column-family database does not need to be of the same degree. In other words, rows can have different sets of columns and super-columns, and they can change dynamically.
It important to notice that rows can be ad...

... middle of paper ...

...ties to relationship between nodes. The performance in (Of) relational databases is lower than the performance of graph databases because Join is a slow operation which decreases the performance as table size increases. In contrast, graph databases find relationships within large amounts of data quickly because they provide index free adjacency instead of processing intensive joins. Another important difference between relational and databases graph databases is schema. Relational databases uses pre-defined schema and there is no provision for dynamic and ad-hoc data while graph databases do not require a pre-defined schema which leads to easier adaptation to schema evolution and ability to capture ad-hoc relationships. Also, most of graph databases can store semi-structured information.
Examples of Graph databases are Neo4J, Infinite Graph, InfoGrid, HyperGraphDB.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Essay about Relational Database Industry For Many Years

- Since the SQL language appeared in mid 1970s, it has been leading the relational database industry for many years. With the modern era of databases not everyone sees the advantages of using relational databases. NoSQL, was first developed in the twenty first century (MongoDB, para 19) to address the issues that the SQL language could not handle. NoSQL cannot handle pure relational database models, it can use any of five different kinds of models, including relational to solve problems. With the variety of models, designers are wondering if there is a future for the strictly relational language SQL, and it’s other disadvantages compared to that of NoSQL....   [tags: Database, Relational model, SQL]

Better Essays
1017 words (2.9 pages)

K. Column Oriented Data Storage System Essay

- C. Column Family Stores Like document databases, Wide-Column (or Column-Family) stores (hereafter WC/CF) employ a distributed, column-oriented data structure that accommodates multiple attributes per key. While some WC/CF stores have a Key-Value DNA (e.g., the Dynamo-inspired Cassandra),most are patterned after Google‘s Big table, the petabyte-scale internal distributed data storage system Google developed for its search index and other collections like Google Earth and Google Finance. D. Graph Databases In contrast to relational databases and the already introduced key oriented NoSQL databases, graph databases are specialized on efficient management of heavily linked data....   [tags: Database, SQL, Database model, Data model]

Better Essays
1023 words (2.9 pages)

Essay about Evolution Of Data Model : Database Management System Model

- Evolution of data model The evolution of data model was traced back in 1960s when the first generation of data model – File system model was introduced. File system used to strictly maintain the records and it does not have relationship between the tables. As the requirement to for managing data evolve, in 1970s, hierarchical and network model were used. These data model handle the relationship between the tables and conceptually simple. However, it still using navigational system and complex in implementation....   [tags: Database normalization, Relational model]

Better Essays
1034 words (3 pages)

Choosing A Database Model Essay

- In this section, the steps and considerations for selecting a suitable database are outlined and explained. These considerations have been developed by professionals through decades of research, implementation and first-hand experience. While they are not a fully set list of considerations, they are widely accepted as relevant and crucial to the developmental process. There are a number of important decisions that are needed when deciding on a suitable database. 1. Choosing the Database Model – Relational or Object etc....   [tags: operating system,dbms, network database]

Better Essays
1581 words (4.5 pages)

What Is A Database? Essay

- What is a database. A database contains a variety of data which are structurally placed in order. They can easily be manipulated, accessed and viewed e.g. a dictionary, timetable or telephone book. A database is like a bank, were you either retrieving the money as well as storing it or you just simply view the amount. In this database what we can identify are the table, record, field and field value. Firstly the table also known as the File, highlighted in green this contains e.g. record of the entire patients....   [tags: SQL, Relational model, Relational database]

Better Essays
707 words (2 pages)

Database Analysis : Database And Information Systems Essay

- Database & Information Systems is a database used in everyday life, it was used in the past, is used in the present, and will continue to be used in the future. There are single and multiuser databases, as well as N Tier an client servers. There are many types of Data models such as, relational and star schema. Databases and information systems are even used on the web, these types can include PHP scripts and CGI scripts. To understand how Database & Information Systems came about, one has to look at the history of data....   [tags: SQL, Database, Relational model, Computer]

Better Essays
836 words (2.4 pages)

Essay on A Note On Database Management System

- In the web space where vast amounts of data is processed and collected, it is typical to store this information in a database. A common form of database is an RDBMS (Relational Database Management System). The act of retrieving and/or storing data to or from an RDBMS is called a transaction (Connolly and Begg, 2014). Connoly and Begg go on to outline the process in which these transactions are applied, by way of a COMMIT or ROLLBACK SQL statement, which are also written to a transaction log and may be used in the event of a systems failure to restore the database to a point prior to the failure....   [tags: SQL, Database, Relational model]

Better Essays
1079 words (3.1 pages)

Database Management System : Mysql Server Essays

- Chapter three: Case Study In the previous chapter we generally mentioned Graph databases together with other types of NoSQL database; however, since one of the main goals of this thesis is giving a simple analysis for two systems, it is necessary to understand what main features and what these systems have. Consequently, in this chapter we will find what are the most Databases that have the best availability and scalability. First of all, we will choose a simplest type of the relational database and describe it which is MySQL....   [tags: SQL, Database, MySQL, Databases]

Better Essays
3366 words (9.6 pages)

Essay on Company Database Design Model

- Introduction As a requirement for our Database Management System I subject, we were assigned to create a database design model for a certain company. Since our instructor allowed us to select any company, we chose _____ ____ _____; further details about this establishment will be explained in the later part of this article. It’s been known that a company with a good business design flow would most likely be much more prone to success since it is the foundation on how a company should develop and progress....   [tags: Database Management System DBMS]

Better Essays
1017 words (2.9 pages)

Relational Database Model Essay

- Comparing and Contrasting the Relational Database Model and OO Model The relational database model is based upon tables or relations. In this model, the physical implementation of the database is abstracted away from the user. Users query the database using a high-level query language, such as SQL. The relations are made up of columns, which have headings indicating the attribute represented by that column. Tables have key fields, which can be used to identify unique records. Keys relate tables to each other....   [tags: essays research papers]

Free Essays
931 words (2.7 pages)