Attempted Question: Question no. 4 • Describe what a relational database is and why relational databases are needed. Introduction: The knowledge of databases is an essential requirement for any being who has majored in the field of computers and IT. Same criteria is involved for a technologist. Relational Database: Relational Database‚ also known as RDB‚ is major sub-branch of Database. A relational database‚ or more commonly known as RDB‚ is a collection of multiple data sets. Mainly
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Table: Similar to spreadsheet used to store data. 2. Queries: Method of extracting specific data 3. Forms: Element to modify and insert records into you databases 4. Reports: It contains raw data and allows the organization of information in an easy way. 5. Databases: collection of associated information 6. Relational databases: access databases in which more than one can share information. 7. Record: each row in a table. 8. Data Value: an item such as data‚ or such as a single phone number.
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a) Describe the user needs of the database and identify the functionality that they are expecting from a Relational Database Management System (RDMS). Due to Katrina and her two staff members now using databases to support their company which is the Mail Order Company‚ the database must be able to add new orders to the system with the correct information about the customer‚ the product and calculation of total order. The database will also need to be able to automatically calculate the total order
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Transaction processing system Transaction processing is a style of computing that divides work into individual‚ indivisible operations‚ called transactions. A transaction processing system (TPS) or transaction server is a software system‚ or software/hardware combination‚ that supports transaction processing. • History One of the first transaction processing systems was American Airline SABRE system‚ which became operational in 1960. Designed to process up to 83‚000 transactions a day‚ the system
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Advantages of a Relational database Relational databases are the standard when creating industrial standard efficient and scalable databases. They are based on a structure of tables which are logically connected to each other and can be queried in complex way to extract relevant and meaningful information. The querying of a relational database is done using a high level language called SQL which stands for structured query language. SQL is very easy to understand and unlike
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Business System Amity Campus Uttar Pradesh India 201303 ASSIGNMENTS PROGRAM: BSc IT SEMESTER-II Subject Name Study COUNTRY Roll Number (Reg.No.) Student Name : : : : INSTRUCTIONS a) Students are required to submit all three assignment sets. ASSIGNMENT Assignment A Assignment B Assignment C DETAILS Five Subjective Questions Three Subjective Questions + Case Study Objective or one line Questions MARKS 10 10 10 b) Total weightage given to these assignments is 30%. OR 30 Marks c) All assignments
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Transaction Processing Systems A transaction is an elementary activity conducted during business operations. Transaction processing systems (TPS) process the company’s business transactions and thus support the operations of an enterprise. A TPS records a non-inquiry transaction itself‚ as well as all of its effects‚ in the database and produces documents relating to the transaction. TPS are necessary to conduct business in almost any organization today. TPSs bring data into the organizational
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File system File names A file name is a name assigned to a file in order to secure storage location in the computer memory. Whether the file system has an underlying storage device or not‚ file systems typically have directories which associate file names with files‚ usually by connecting the file name to an index in a file allocation table of some sort‚ such as the FAT in a DOS file system‚ or an inode in a Unix-like file system. Directory structures may be flat‚ or allow hierarchies where directories
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Sheena M. Hunt Database Paper DBM/381 University of Phoenix Healthcare database systems are critical in health care. Databases are used frequently in healthcare. There are different types of databases. This paper will define health care database systems and describe how databases are used across the health care industry. It will also explain the different database architectures including the relational architecture and describe the needs of database users across the health care continuum
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Database management systems A database management system (DBMS) consists of software that operates databases‚ providing storage‚ access‚ security‚ backup and other facilities. Database management systems can be categorized according to the database model that they support‚ such as relational or XML‚ the type(s) of computer they support‚ such as a server cluster or a mobile phone‚ the query language(s) that access the database‚ such as SQL or XQuery‚ performance trade-offs‚ such as maximum scale
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