Network Database Model : A Network Model

A numerous to-numerous relationship alludes to a relationship between tables in a database when a parent push in one table contains a few youngster pushes in the second table, and the other

Be sure to provide a detailed explanation of relational databases along with their associated business advantages.

Abstract- This research documents a comprehensive evaluation of the emerging graph databases along with a benchmark study to compare it to the existing relational model. With the ease of the graphical representation brought in with Neo4j, we saw the opportunity to attempt getting details about the various attributes in the dataset and analyze this data to present a statistical view along with its popular counterpart, MySQL. The ultimate goal of this study is to determine whether a traditional relational database system like MySQL, can be replaced completely in production, by a graph database, such as Neo4j.

A relational database is a database that consists of a collection of tables with columns showing entities, and rows showing data. This type of database uses a primary key and foreign key. The foreign key in another table will point to the primary key of a table, and this is how tables can relate to each other. This permits for one-to-one, one-to-many, and many-to-many relationship between the data. An advantage of relational databases includes the ease of adding or modifying new tables and entities without needing to change the structure of the database already in place. Relational database have many features, including indexing, setting data type, and setting validation tests, all these help to ensure data integrity.

It will create a clear purpose of the database and each one of the tables within making maintenance easy to perform on weekly basis and security breaches easy to spot. The quick and efficient accessibility of the data will improve timing in business reporting turnaround and therefor increase sales and profit by quick and easy business response to market changes. Security concerns will be limited by creating admin account that can control and modify the system and users that can access it without any system modifications allowed. Main server and system will be backed up on an external drive and supported by external power source so no data will be lost if database is not

Increased reliability and availability: A distributed database system has multiple nodes (computers) and if one fails then others are available to do the job. So we can say that redundancy and replication of the DB increase security and accessibility.

Database model defines the logical structure of the database by determining manner in which the data will be stored. Relational model is one of the most popular database models, which defines tables and relationships between the tables.

In a distributed database system, all the databases or the storage devices are not connected to a single common processing unit like CPU. The various data may be stored at different physical locations in multiple computers that are located in the same physical location; or they may be inter-connected over a network. In other words, distributed database system consists of various data locations but they do not share any physical components.

General a database has a lot of tables and some tables are related to each other so relationship is use to make the connection between two or more tables. It is a method to avoid excessive data and to ensure the data integrity. There have three types of relationships:

The tables in relational databases organize data in rows and columns, simplifying data access and manipulation. It is easier for manager to understand the relational model than put all data in one table. Besides, a relational database allows tables to be linked. And the linkage reduces data redundancy and allows data to be organized more logically. In a word, relational database is easier to control, more flexible, and more intuitive than approaches.

Figure 11 shows the relationship of a database using DBMS, connecting the user with the information from the database. A database consists of many data from customers to orders, services, employees, and so on. The user can be a customer or employee. Employees use DBMS to find customer’s information, service types, and service provider information. Later in the process, the DBMS will then extract data from the database to answer the users’ questions.

One advantage to using relational databases include ease of use due to query languages, and the ease of altering the structure due to data independence. In addition, there are no predefined set of relationships between data records in the relational

A relational database is designed to comply with a term called normalization. Normalization is a process of organizing tables to minimize the redundancy in the database. The design of a relational database decreases the amount of space the database uses in a system. The relational database uses fields to help reduce redundancy in the tables. Relational designed database use the relational value in fields, an example would be a field for Book_ISBN and a field with Title_ISBN, could be limited to just one field naming the ISBN (Safari).

Firstly a relational database contains a set of tables which basically are linked collectively by the relationships between the tables. Also it is also known as reason such as a database is called relational database.

The object oriented DBMS is superior to the relational database on some specific counts, primarily because it can satisfy the complex demands of the market today better than the any other. Secondly while the relational data base stores data as tables, the object model stores data as objects and creates associations. This can create a multiple set of attributes for each object such that the data base is more flexible to the requirements that may be housed for different sets of data having both similar and dissimilar characteristics. The paradigms then are developed for each set of common characteristics and unique characteristics of the objects which is not possible in a relational database that has a very rigid structure. (Bruegge, 2004)