you remove the IS_REGISTERED table? c. How would you change the field for FACULTY_NAME from 25 characters to 40 characters? 5. Create an SQL command that will modify the name of course ISM 4212 from ‘Database’ to ‘Introduction to Relational Database’. 6. Write SQL queries to answer which students have an ID number that is less than 50000? 7. Write SQL queries to answer which faculty members have qualified to teach a course since 1993? List the faculty ID‚ course
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in terms of bytes per unit of information‚ which would help with performance A well-normalized database is faster to write and to access for the same reason which would also be a plus for performance. Normalization would cause relational inconsistencies which would mean no redundancy. The cons for normalization: Normalization requires skill to provide functional views and access methods that are comprehensible and streamlined for consumer
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database allows those authorized to use the data within it and control the creation‚ maintenance‚ and use of a database. A database stores various kinds of files‚ data records‚ and other objects. There are a variety of database models; there is the relational model or object model‚ which supports applications. That use query languages‚ which are high-level programming languages‚ and dedicated database languages that simplify writing database application programs. The main function of a database is basically
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Concepts Copyright © 2012‚ 2010‚ 2008‚ 2007‚ 2006‚ 2005‚ 2003 by University of Phoenix. All rights reserved. Course Description This course covers database concepts. Topics include data analysis‚ the principal data models with emphasis on the relational model‚ entity-relationship diagrams‚ database design‚ normalization‚ and database administration. Policies Faculty and students will be held responsible for understanding and adhering to all policies contained within the following two documents:
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can be uniquely determined from their SSN. However‚ the reverse statement (name -> SSN) is not true because more than one employee can have the same name but different SSNs. QUESTION 2 ENTITY RELATIONAL MODEL(ERM) It is an abstract way to describe a database. It usually starts with a relational database‚ which stores data in tables. Some of the data in these tables point to data in other tables. For instance your entry in the database could point to several entries for each of the phone numbers
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never have null values occurring for any data item in the row. Answer: FALSE Diff: 1 Page Ref: 5 5) One problem with storing duplicated data is the potential for inconsistent values. Answer: TRUE Diff: 2 Page Ref: 4 6) A relational database stores data in the form of lists. Answer: FALSE Diff: 1 Page Ref: 6 7) Usually‚ a database table containing both rows and columns is designed to store data for exactly two themes. Answer: FALSE Diff: 2 Page Ref: 6
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PCN-100 January 20‚ 2014 Anne Marie Bach- Sterling Roles of the Addiction Counselor Analysis Paper An addiction counselor has many roles; counselor is only one of them. Others include interventionist‚ mediator‚ advocate‚ change agent‚ adviser‚ and facilitator (Lecture Module 4‚ 2013). While treating a client those roles are constantly changing and are necessary to help a client to overcome addiction. In addition the counselor must be able to maintain a balance of ethical‚ moral‚ and legal
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also show symptoms such as emotional outbursts or fluctuation‚ learning difficulties‚ and inappropriate social‚ sexual‚ or emotional behaviors (NIJ‚ 2011). Finkelhor and Browne (1985) examined how traumagenic dynamics play a role in how sexual abuse traumatizes children. Traumagenic dynamics are defined by four trauma-causing factors that include traumatic sexualization‚ betrayal‚ powerlessness‚ and stigmatization. The first type is traumatic sexualization which can be summarized as the molding of
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while a relational database has data thatis dependent on the data that is entered in tuples that are related to thatattribute. in the ordinary tables and files‚ there are no constraintsrelated to the related data and a user could input whatever they wanted Q. Discuss the various reasons that lead to the occurrence of null values in relations in detail? Each value in a tuple is an atomic value; that is‚ it is not divisible into components within the framework of the basic relational model. Hence
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Assignment # 1: Dynamic Systems Theory In the late 20th century‚ developmental Psychologist Esther Thelen emerged with a new theory of human motor development which was fundamentally different from the Neuromaturational theory which was universally accepted at that time as a logical and intuitive model to accurately explain motor development in infants (Schrock‚ 2003). Thelen was not satisfied with this Neuromaturational approach as it left many essential questions unanswered and as
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