1) Differentiate between database management system and information retrieval system by focusing on their functionalities. (Up to one page)
[30% marks]
Database management system is also known as DBMS. DBMS is a software system that uses a standard method of cataloging, retrieving and running queries of data and to control access to it. DBMS usually manages incoming data, organize the data and provides ways for the data to be altered or extracted by users or other programs. Some of the example for DBMS includes MySQL, PostgreSQL, Microsoft Access, SQL server and Oracle.
Above is the diagram of how DBMS and operating system works, to access the database controlled by the host operating system. DBMS accepts request for data from the application program and then informs the operating system to transfer the required data. The file manager keeps track of the location of the data and whiles the system buffers are the temporary location for storing and manipulating the data. Reading and writing of the data is performed at System buffers.
As for the functions of DBMS, it is a query processing (SQL) and optimization, query optimization determines the optimum strategy for a query execution. Then, security control, DBMS have includes a prevent of unauthorized access to the database. Data Integrity in DBMS includes the facility for enforcing integrity constraints whenever a change is made to the data to ensure that the database is consistent and no error. Lastly, the functionality of DBMS is recovery, the DBMS must take steps to ensure that if the database fails, it will remain at a consistent state which that the data will not be lost. Other than that, DBMS also have data independency function, which this function pro...
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...se with little or no form or structure fixed. Unstructured data is including e-mails, reports, contracts, and other communications. A person who performs activities in an unstructured communication system has wide latitude to structure the message in any desired shape. Rules unstructured system is a little complicated and less.
Illustrator about non-Structured Data and Structured Data
Example of Non-Structured Data
Non-Structured data is raw and unorganized and organizations keep everything. Ideally, all this information will be made in the form of structured data; however, this would be expensive and time consuming. Also, not all types of unstructured data can easily be converted into a structural model
List of types of unstructured data:
• Emails
• Word Processing Files
• PDF files
• Spreadsheets
• Digital Images
• Video
• Audio
• Social Media Posts
The first database systems were based on the network and hierarchical models. A database can be defined as a collection of non-redundant data which can be shared by different application systems. A database implies separation of physical storage from use of the data by an application program to achieve program/data independence. Using a database system, the user or programmer or application specialist need not know the details of how the data are stored and such details are usually "transparent" to the user. .
Databases always used to fascinate me from my under graduation with great curiosity to know how large data is managed and queried. This led me to do Masters in computer science concentrating in the field of Data Management. In the course of my study, I understood the concepts of DBMS which provides a robust and efficient way of managing and mining data. Through the courses like Database Systems (ITCS 6160), Knowledge Discovery in Databases(ITCS 6162) and Knowledge Based Systems(ITCS 6155) I gained enough theoretical and practical knowledge about the importance of proper organization of data, good techniques to build an efficient database management system and how well the data can be managed.
In an SQL database like MySQL, or Oracle, it executes queries, retrieves or updates data, and even deletes or creates new records. SQL is a lightweight language that is declarative and does a lot of heavy lifting for the relational database, thus it may act like a server side script but only database version of it.
For this coursework two kinds of data models can be used. The object oriented data model, Object Oriented Database Management System(OODBMS), or the relational data model, Relational Database Management System(RDBMS). The differences between these two models and the data model to be used are described in this chapter.
A database is a collection of data which is organized and easy for users to find data. Database can record massive amount of data, it can be use for business and organization’s purpose. Every organization should have database security to secure the information of the organization.
A database management system, or DBMS, gives the user access to their data and helps them transform the data into information. Such database management systems include dBase, Paradox, IMS, and Oracle. These systems allow users to create, update, and extract information from their databases. Compared to a manual filing system, the biggest advantages to a computerized database system are speed, accuracy, and accessibility.
As Satzinger, Jackson & Burd (2010, pp. 488) states that a Database Management System (DBMS) is a “system software that manages and controls access to a database”. It is generally purchased and installed separately from other system software components. Examples of DBMS includes Microsoft Access, Oracle and Gemstone.
There are some common typed of information systems. Database management system is one of the common types of information system. It is a mixture of software and data that makes it possible to sort out and examine data. Database management system is just not for working with a particular organization
Information Retrieval is simply a field concerned with organizing information. In other terms, IR is emphasizing the range of different materials that need to be searched. Others researcher said that IR is the contrast between the strong structure and typing a database system with the lack of structure in the objects typically searched in IR. The actual process in information retrieval systems is it has to deal with incomplete or under specified information in the form of the queries issued by users. IR uses the techniques of storing and recovering and often disseminating recorded data especially through the use of a computerized system.
Databases are becoming as common in the workplace as the stapler. Businesses use databases to keep track of payroll, vacations, inventory, and a multitude of other taske of which are to vast to mention here. Basically businesses use databases anytime a large amount of data must be stored in such a manor that it can easily be searched, categorized and recalled in different means that can be easily read and understood by the end user. Databases are used extensively where I work. In fact, since Hyperion Solutions is a database and financial intelligence software developing company we produce one. To keep the material within scope I shall narrow the use of databases down to what we use just in the Orlando office of Hyperion Solutions alone.
Database management system (DBMS) is a collection of interrelated data and a set of programs to access the data. The collection of data, usually referred to as a database, contains the information related to the Company, the company's system at workplace, detailed information as an example employee personal information stored in the data. The goal of a database management system is to provide a way how to store and retrieve data information more efficiently. For examples, of the data, consider the name, telephone number and address are known, the recorded data is indexed address book, can be stored on a floppy disk, using a personal computer and software such as dBase IV or V, Microsoft Access or Excel
DBA deals with all of this by finding user needs, set the database, and test the system. DBA should enable editing any system he or she created. At the same time DBA should ensure the security of the data and guarantee data integrity and backup. Moreover, DBAs should know the database management systems (DBMS) that include the knowledge of Oracle, IBM DB2, and Microsoft SQL server (“Database Administrator,” 2010). Oracle is one of the most important platforms that DBA must know and have experience with. According to Kanaracus “The database experience we look for most of the time is Oracle”, says Tom Hart, executive vice president of the operations and technology group at Veritude. “SQL Server is more of a nice-to-have"
This is an application program that a computer program that interacts with database by issuing an appropriate request (SQL statement) to the DBMS.
In our world, people rely heavily on the power of technology every day. Kids are learning how to operate an iPad before they can even say their first word. School assignments have become virtual, making it possible to do anywhere in the world. We can receive information from across the world in less than a second with the touch of a button. Technology is a big part of our lives, and without it life just becomes a lot harder. Just like our phones have such an importance to us in our daily lives, database management systems are the same for businesses. Without this important software, it would be almost impossible for companies to complete simple daily tasks with such ease.
The DBMS has a function that can be differentiate from the information retrieval system. The DBMS have the ability to store, update and retrieve the data. This is the main function of the DBMS because the database can be used if there is any record is being stored into the database. The record need to be retrieve first, then it can be change by the database administrator as it will be the record has been updated. The DBMS will protect the structure of the data structure.