A database is an organized collection of data. The data is organized to model relevant aspects of reality in a way that supports processes requiring this information. Data management systems are specially designed applications that interact with the user, other applications, and the database itself to capture and analyse data. Database management systems are software systems designed to allow the definition, creation, query, update and administration of databases.
Many organizations in developed countries depend on databases for their business operations. Databases are not only used to support the internal operations of the organization but to underpin its online interactions with customers and suppliers. They are not only used to hold administrative information but often are embedded within applications to hold more specialised data.
Database technology has been an active research topic since the 1960s. Research activity includes theory and development of prototypes. Some more notable research topics include models, the atomic transaction concept and related concurrency control techniques. Research on databases is published in several dedicated academic journals including ACM Transactions on Database Systems-TODS, Data and Knowledge Engineering-DKE and at annual conferences.
I need help with doing some web search research on relational databases and explain briefly how such a database works, and basic components. Then, go to a website with a data entry form and discuss that form in terms of a relational model. I also want to include important information about linking two flat files, what informatio
You have successfully installed OpenOffice by providing screen shots. Describe your downloading experience
Demonstrate how you would use a temporal database to keep track of dates.
Please explain the importance of databases in compliance reporting?
1. When would you use a relational database model? 2. What makes up a database system?
I need the following 1NF figure converted to 2NF figure with a explanation of the steps taken. Once in 2NF, it needs to be converted to 3NF, and explanation of steps taken is needed as well.
1. How do information systems projects get started in organizations? 2. How are organizational information systems related to a company strategy? How does strategy affect the information systems a company develops and uses?
Consider a disk with the following characteristics (these are not parameters of any particular disk unit): block size B=1024 bytes, number of blocks per track=10, number of tracks per surface=400. A disk pack consists of 15 double-sided disks. (a) What is the total capacity of a track? (b) How many cylinders are there? (c)
In the accompanying figure, analyst names appear more than once in the table. Storing this data on multiple records is an example of redundancy which can cause several problems. What are these problems? What is the solution to the problem? (see attachment)
The system development team at Wilson Company is working on developing a new customer order entry system. In the process on designing the new system, the team has identified the following class and its attributes: - Inventory order - Order number, - Order Date - Street address - City - State - Zip - Customer type - I
In this discussion board, you will investigate distributed databases and partitioning. You have been asked to prepare an informative memo that will address the following: - Describe what a distributed database is and how replication works with respect to managing the data in these databases. - Provide an example of what kind
Create a database with a table called "MyUsers" and "MyRole" This table should have the following columns. loginID -Text (Primary Key.) FullName- Text. Description- Text. Password The table, MyRole, should have the following columns - role name role description There should be 2 roles in this table Administrator
Resources: Huffman Trucking Virtual Organization (attached) Review the information currently housed in Huffman Trucking's database, in the Entities and Attributes for Fleet Truck Maintenance file on the virtual Organizations site. Create a Microsoft® Visio® Logical ERD, based on the Entities and Attributes for Fleet Truc
Normalize the tables you have designed in module 2. Explain how you redesign your tables to satisfy the requirements of 1NF, 2NF and 3NF. When necessary, it is perfectly okay to create another table. If you believe your tables designed in module 2 already met the normalization requirement, explain why. Modify the database you
Please review the attached document and construct the database using Access.
1) Your task is to first "sketch" a Student Information table (basically what columns should be included in the table) using the Student_information table at the following as example. Your table should contain the following: Column heading include all the attributes that need to be in this table. Populate the table with 10
There are many kinds of entity relationships in a database model. The relationships can be classified by the following things. Cardinality: maximum and minimum Degree: binary, ternary, degree 4, and so forth Entity type: strong, weak, ID-dependent, and supertype/subtype What are these different types of classificatio
How do you create an account number query?
Many texts and articles will state that normalization to 3NF is sufficient. a) Are there database environments that would require normalization to a higher normal form? b) How about environments that do better when normalization is to a lower normal form? c) Why do you think there are so many different normal forms to choo
The current practice of a particular part of water resources engineering is supported by a variety of commercial software. Pick a specific domain within water resources engineering. What is the software? What does it do? Who uses it and why? What are the assumptions and limitations of the software? What is the future of this sof
Besides a power plant or an airplane cockpit, what is an analogy of some complex distributed systems that need to be controlled?
a. Using the data below, design and populate a table that includes basic training rate information. Designate the "Technical" field type as "Yes/No" (Boolean). b. Using the data below, design and populate a course table. Designate the CourseID field as a "Primary Key" and allow your database to automatically generate a valu
I need clarification regarding the following questions: Every large organization has large files or databases containing data used in operating the business. Does a data warehouse differ from these operational files or databases? Explain why or why not. (At least 200 words).
Discuss three possible problems that can occur because of concurrent processing that are addressed by resource locking.
Explain why normalization is important. When is it important to denormalize a database? Can you provide an example/examples? What is denormalization, and why can it be desirable? Provide an example.
Need help identifing and analyzing three trends and factors that have the most significant influence on today's health information systems and explain why. Then identify why health care delivery systems might be affected by the trend/s factors you select? Finally compare and contrast health informatics and health informa
Create and populate tables within a database using MS Access that supports the following business rules: Employees all have employee ID's, first names, last names, middle initials, street addresses, city, state, postal codes, and a date of birth. Departments all have department IDs, department names, and a department d
What is normalization? What are the basic steps of the normalization process?
What is normalization? What are the basic steps of the normalization process? What requirements must a two-dimensional table satisfy in order to be a relation? Provide an example of a table that is a relation.
Explain the difference between simple and composite attributes. Provide at least one example of each. Explain multivalued attributes, and provide an example. How are multivalued attributes indicated in the Chen model? How are they indicated in the Crow's Foot model? Explain data redundancy and what it sets the stage f
This book describes creation of Extensible Markup Language (XML) documents and Document Type Definitions (DTD) for the XML documents. This book provides an introduction to fundamental concepts related to creation of XML documents as well as step-by-... READ MORE »
Word 2010: Table of Contents
- What are standard ways to “mark” a Table of Contents in Word 2010?