The aim of this essay is to present an evolutionary history of various Database Models over the four decades of their existence. The essay attempts to list the strengths and weaknesses of each model and discuss the causes that led to their development…
Download file to see previous pages...
As the paper declares the navigational Model encompasses the “network model” and “hierarchical model” of database interfaces. The network model was developed by Charles Bachman in 1971 to define and set a standard for database systems. This model had a collection of records, connected to each other through links. Various record types were interconnected to each other, thus allowing a many-to-many relationship. IDS and IDMS are both examples of the network model. A network model can be explained using this schematic diagram.
This discussion explores that navigational databases are open-ended and are best suited to handle small-scale data. However, it is difficult to search for data in this system since it does not have the search functionality. The system had to be navigated “manually”, that is to reach a particular record, one had to start at the parent record and then navigate step-by-step until one reaches the desired record. Due to these limitations, navigational database models became outdated by 1980s, though a form of the hierarchical model is still used in XML applications. The main distinguishing feature of the relational model is that the data is organized in a tabular form in rows and columns. The rows list the data while columns list the attributes. A key is chosen that uniquely identifies every row in the table and links different records from different tables. To find a particular set of data, a “query” is generated which mines the entire database to return the required answer.
...Download file to see next pagesRead More
Cite this document
(“Database Architecture and Administration Essay Example | Topics and Well Written Essays - 2250 words”, n.d.)
Retrieved de https://studentshare.org/politics/1537503-database-architecture-and-administration
(Database Architecture and Administration Essay Example | Topics and Well Written Essays - 2250 Words)
“Database Architecture and Administration Essay Example | Topics and Well Written Essays - 2250 Words”, n.d. https://studentshare.org/politics/1537503-database-architecture-and-administration.
Besides, “Oracle Forms” is a component of Oracle Fusion Middle-ware. It is Oracle’s long-established technology for designing and developing enterprise applications efficiently and rapidly. As for another ongoing release, Oracle vestiges committed to the development of “Oracle Forms” as a component of Oracle platform.
Information architecture in most cases is executed under the business architecture (Bernus, Nemes & Schmidt, 2003). Enterprise Business Architecture Enterprise business architecture involves a portrayal of the processes, entities and functions on a business scale.
Enterprise Architecture: Justification Name: Institution: Introduction An enterprise has been defined as a business venture that has recognizable business functions and operations. It is a stand-alone entity that sometimes has other enterprises within it. Architecture is the underlying framework that makes up a system.
For the security breaches within data transfer, different encryption techniques are employed for the safe data travel but the data connecting to database servers must be subjected to policies and mechanisms to protect it from vulnerabilities. A broad spectrum of information security controls is employed on the database servers to protect it from vulnerabilities to its confidentiality, reliability and integrity.
roducts shipped Varchar (100) 4 Product ID F Numeric Employee: No Attribute name PK FK Data Type 1 Employee ID P Alphanumeric 2 Name Varchar (100) 3 Job ID F Numeric 4 Department ID F Numeric 5 Country ID F Numeric Country: No Attribute name PK FK Data Type 1 Country ID P Alphanumeric 2 Country Description Varchar (100) 3 Country Name Varchar (100) Justification for the selection entities and attributes: From the given scenario three tables are evident that is the product table, country and employee table.
For such services to be availed properly, huge amounts of data are processed - a service that traditional database management system could not handle (Pludge & Membrey, 2010). A critical analysis of the NoSQL
Today hospitals increasingly depend on electronic databases to deal with patient care, administration, staff recruitment and training, and many other healthcare functions. There are different types of database architectures to support the varying needs of different healthcare systems.
In the paper the writer focuses upon the implementation of integrated time-driven scheduler. The lead requirement is that this scheduler must be supportive of numerous scheduling policies because there are no universal scheduling policies that fit all applications. As such, the scheduler crossing point should support the scheduling policies changing interface.
8 Pages(2000 words)Assignment
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Essay on topic Database Architecture and Administration for FREE!