Can a database contain two identical records without a negative effect on the integrity of the database? Why or why not? Data redundancy is a situation that occurs within database systems and involves the unintentional creation of duplicated data that is not necessary to the function of the database. While redundancy is often a desirable trait in some situations, this is not true when it comes to the function of a database. The presence of duplicated data can often have an adverse effect on the
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As a group, we chose Data Mining for our project and in specific, an organization very popular and well used, Facebook. Facebook was founded on February 4, 2004 and its mission or purpose was to provide a social media platform. There is not a subscription cost and the platform is freely available to anyone with an internet connection and email address. However, there are advertising tools which one can pay for to ensure your various posts reach more of an audience. For example, you can set up
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Aruna Palani (1200862) 03/11/15 Case Study – ESPN 3. How much information on users does ESPN store? Why does this pose a challenge for ESPN? Can’t they just use a standard 1 terabyte hard drive from a PC? Why can’t they use a single PC? ESPN stores roughly 200 gigabytes of information of its users. This poses a challenge for ESPN because that have to store so much information that this won’t fit in one JVM, 2 or even 100 of them. So why can’t they use a standard 1 terabyte hard drive
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This week’s programming assignment on how to sort fruits and arrange them in alphabetical order was not easy to do. It took me to do many examples and readings to understand the code in looping structure that is for loop, in the while loop. I have to run module several times, back and forth and carefully observe and do many examples to be able to arrange all the fruit in alphabetical order. What I have learnt so far programming is that, no matter what you code if you do not give the right codes
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Hibernate allows us to do object relational mapping. Simply this mean, conversion of objects derived from java classes inside the application, directly to tables in the database. This will reduce the effort utilized in drawing ER diagrams, normalization (conceptual design) as well as physically writing SQL coding to complete the physical design inside the RDBMS. Hibernate will prevent getting your java code dirty via writing SQL within it. If you use hibernate, no sql within your java application
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INTRODUCTION TO MS ACCESS CH 4 STD VIII Q1. Very short answer type questions. i. The full form of RDBMS is Relational Database Management System. ii. Row wise information in table is called record. iii. The information stored column wise in a table is called fields. Q2. Short answer type questions. i. Information in a database is stored in a tabular format consisting of rows and columns i.e. a table organizes the data in the form of rows (records)and
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Question 1 0 out of 4 points | | | The portion of the database that a user is authorized to see is called aAnswer | | | | | Selected Answer: | table | Correct Answer: | view | | | | | Question 2 4 out of 4 points | | | The person who designs, creates, and manages the database is theAnswer | | | | | Selected Answer: | DBA | Correct Answer: | DBA | | | | | Question 3 0 out of 4 points | | | Data consistency meansAnswer
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Consistent Query Answers in Inconsistent Databases Marcel0 Arenas Pontificia Universidad Cat6lica de Chile Escuela de Ingenieria Departamento de Ciencia de Computaci6n Casilla 306, Santiago 22, Chile marenas@ ing.puc.cl Leopold0 Bertossi Pontificia Universidad Cat6lica de Chile Escuela de Ingenieria Departamento de Ciencia de Computaci6n Casilla 306, Santiago 22, Chile bertossi@ing.puc.cl Jan Chomicki Monmouth University Department of Computer Science West Long Branch, NJ 07764 chomicki @monmouth
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What is the most popular type of database? relational Using a file-oriented approach to data and information, data is maintained in many separate files. 3. File-oriented approaches create problems for organizations because of multiple master files which may contain redundant data. 4. Which statement is true regarding file systems? The proliferation of master files creates problems in the consistency of specific data stored in different files. 5. A set of interrelated,
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existing tables. In other words, it uses the relationship of similar data to increase the speed and versatility of the database. Relationship database establish the relationships between entities by means of common fields included in a file, called a relation. For example, a customer orders a product. Each customer may has an ID number and has a name. The relationship between a customer and the customer’s order created by the
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