Databases

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.

Oracle Sqlplus

I need some help in this exercise: Write and execute an SQL query in SQL*Plus A. Table Creation and Management 1. Create a new table using the CREATE TABLE command. Use your first name and your last name for the name of the table (for instance, for John Smith the name of the table will be JOHN_SMITH). Make sure to include

ERD using MySQL modeling tool

1.Use the following business rules to draw the fully labeled Crow's Foot ERD in Visio. The diagram must include all entities, attributes, and relationships. Primary keys and foreign keys must be clearly identified on the diagram. Write all appropriate connectivities and cardinalities on the ERD. a). A customer must own at least

Access Database Search Form with Queries

Create a query in Access. You have several users and would want to create a query where you can pull information from 3 tables (Lab Audit, Gas Cylinder Pressure Reading, and GC ID Mix analysis) for one particular user. The query should ask for user name (or initials) and a date range as input. Database is attached.

Help with creating a database using SQLite

Provide SQL statements to create the database and populate it with sample data at least 4 rows per table modify the database by adding an additional column "Deleted_Date" to those tables that represent entities that could contain data which can be deleted and justify your rationale in a short paragraph. Explain what the tra

Relational Database Components

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

Installing OpenOffice

You have successfully installed OpenOffice by providing screen shots. Describe your downloading experience

Temporal Databases

Demonstrate how you would use a temporal database to keep track of dates.

Form Conversions

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.

Information Systems Project And Company Strategy

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?

The solution gives me detailed steps to calculate the following characteristics of a disk: capacity of a track, number of cylinders, capacity of a cylinder and capacity of a disk.

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)

Redundancy in Relational Databases

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)

Custom order entry system

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

Distributed database

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

Database Assistance with ASP.NEt

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

Huffman Trucking Virtual Organization

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

Normalisation of Database Design

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

Student Information Table

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

Entity Types and Relationships

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

The Different Normal Forms

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

Water Resources Engineering Software

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

Designing and Populating a Table

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

Data warehouse differ from operational files or databases

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).

Normalization and Denormalization

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.

Trends and Factors in Health Care Informatics.

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