Entity Relationship Diagram
When developing a relational database understanding the logical flow of information and proper planning will improve the probability of the database functioning the way it is intended and producing the desired results. In determining the proper structure of a relational database for a video rental store one must consider what information is stored, the process for renting videos and information on the videos maintained in inventory. Customer, Videos and Video Types are the entity classes that will be discussed and Customer Order is the intersection relation needed to explain the complete process as seen on the Entity Relationship Diagram below.
Customer
Maintaining detailed customer information is a critical function of a video rental store’s relational database. The primary key of the Customer entity class could be a field named Customer ID Number that is a unique number automatically generated when a new customer is entered. The video store could also choose to use a unique number identifying the customer such as driver’s license number, phone nu...
Researcher Mark Knapp is best-known for describing and developing a 10 step model of relational stages, it explains how relationships come together and how they come apart (Alder, pg 287). I decided to take one of my past relationships with an ex-boyfriend of mine through Mark Knapp's relational stages model. I will be referring to my ex-boyfriend as Johnny throughout this paper.
Huffman Trucking has recently hired a consultant company, Smith Systems Consulting, to design a database that will enable Huffman Trucking to better organize and track the truck maintenance for their fleet. Smith Systems Consulting has done an analysis of Huffman Trucking to develop a basic plan for integrating information into a database. Entities and attributes have been defined by Smith Systems, but the relationships and tables of the database still need to be defined.
Fairy tales tell us that once upon a time a girl met a boy; they fell in love, and lived happily ever after. Reality is not that simple. Long-term relationships force couples to get to know each other, involve themselves in each others’ worlds, fight through the hard times, and eventually develop deeper connections as noted through distinctive stages of Knapp’s relationship model. Although I have dated the same person for over two years, our communication through relationship stages makes it seem as though I am now dating a different person than the one I met years ago. Following dissolution and subsequent repair, I realize the most exhilarating of roller coaster rides develop through sets of ups and downs, much like the stages on how our relationship is built.
As people grow, a variety of relationships develop over time. Relationships with family, friends, and romantic partners are such examples of these diverse ties. Friendships in particular are affected by the following: the level of interaction involved, how communication between two friends is established, and contact, if they exist, between multiple circles of friends through one person. Some examples of these are friendship expectations, the stages of childhood friendship, and the stages of adult friendship.
Relationships between two people can have a strong bond and through poetry can have an everlasting life. The relationship can be between a mother and a child, a man and a woman, or of one person reaching out to their love. No matter what kind of relationship there is, the bond between the two people is shown through literary devices to enhance the romantic impression upon the reader. Through Dudley Randall’s “Ballad of Birmingham,” Ben Jonson’s “To Celia,” and William Shakespeare’s “Shall I Compare Thee to a Summer’s Day?” relationships are viewed as a powerful bond, an everlasting love, and even a romantic hymn.
From the scenario described above, I have determined that the following main entities are the most appropriate for a relational database: cemeteries, burial plots, burial records, monuments, buildings, and inscriptions. Each main entity and its significant attributes will be described below; however, a full list of attributes can be found in the appendix.
In this paper I have analyzed the past and present condition of Blockbuster. Given the right circumstances and execution, Blockbuster can once again return to the video rental powerhouse status they enjoyed throughout the 1990s.
The tools of data warehousing, Data Mining and customer relationship management (CRM) have enhanced businesses’ ability to create and build relationships with customers.
[7] Elmasri & Navathe. Fundamentals of database systems, 4th edition. Addison-Wesley, Redwood City, CA. 2004.
Inconsistently storing organization data creates a lot of issues, a poor database design can cause security, integrity and normalization related issues. Majority of these issues are due to redundancy and weak data integrity and irregular storage, it is an ongoing challenge for every organization and it is important for organization and DBA to build logical, conceptual and efficient design for database. In today’s complex database systems Normalization, Data Integrity and security plays a key role. Normalization as design approach helps to minimize data redundancy and optimizes data structure by systematically and properly placing data in to appropriate groupings, a successful normalize designed follows “First Normalization Flow”, “Second Normalization Flow” and “Third Normalization flow”. Data integrity helps to increase accuracy and consistency of data over its entire life cycle, it also help keep track of database objects and ensure that each object is created, formatted and maintained properly. It is critical aspect of database design which involves “Database Structure Integrity” and “Semantic data Integrity”. Database Security is another high priority and critical issue for every organization, data breaches continue to dominate business and IT, building a secure system is as much important like Normalization and Data Integrity. Secure system helps to protect data from unauthorized users, data masking and data encryption are preferred technology used by DBA to protect data.
Stair, R. & Reynolds, G. (2003). Fundamentals of Information Systems, Second Edition. [University of Phoenix Custom Edition e-text]. Boston. MA: Course Technology, a division of Thomson Learning, Inc. Retrieved October 1, 2006, from University of Phoenix, Resource, CIS564 ¡V Information Management in Business Course Web site.
The process of grey relational analysis is divided into four steps are (Kuo et al 2008):
The transportation industry (airline, railway, bus transit, automobile rental agencies) has undergone enormous changes in the way its customers purchase tickets and place reservations. The continuing popularity in e-commerce combined with the widespread increase in the number of people with internet access has caused an explosion in the number of...
Moreover, E-commerce has widely recognized nowadays among people. Therefore such data should be secure in databases and privacy of data should be maintained.
One important component needed for a cohesive work environment is relationships. Relationships help keep an organization together, and also provide a healthy and comfortable environment for the employees. Relationships bring personal cohesiveness, and personal support within an organization. There are different components that contribute to healthy relationships. They include the flow of communication, methods used to communicate, the way members communicate, the way conflict is handled, and the support and openness of the members.