Please answer and elaborate on the following

In your opinion what would make a company or organization migrate to a relational database architecture from a network or hierarchical architecture? What are some of the factors that should be considered when transferring data from one database architecture to another?

SQL

I am seeking help with solving several SQL statements. Table: Employee (for problems #1 and #2) EmpID Dept Salary HireDate SupervisorID 1001 Finance 10,000 11/1/98 1020 1002 Finance 15,000 12/12/96 1020 1020 Finance 30,000 2/9/96 1035 1015 Human Resources 20,000 3/15/01 1045 1008 Operations 9,000 8/22/97 1013 1010 O ...continues

SQL

I am seeking help with solving several SQL statements. I am specifically looking for the code that goes with these problems. **First Problem** Table: Employee (for problems #1 and #2) EmpID Dept Salary HireDate SupervisorID 1001 Finance 10,000 11/1/98 1020 1002 Finance 15,000 12/12/96 1020 1020 Finance 30,000 2/9/96 ...continues

SQL

I am seeking help with solving several SQL statements. I am specifically looking for the code that goes with these problems. **First Problem** Employee table contains the following information: state, lastname, firstname, hiredate, department, salary. Get all employees that satisfy the following conditions: - fr ...continues

SQL

I am seeking help with solving several SQL statements. I am specifically looking for the code that goes with these problems. 6) A wide world importers company tracks its order information in a database that includes two tables: Order and LineItem. See table structures below: CREATE TABLE dbo.Order ( OrderID int NOT NULL, ...continues

Intro to Database

Please help with review questions ... 1. List the entities shown 2. What is the primary key for each entity? 3. Are there any multivalued attributes shown? If so, discuss how it/they should be handled in the implementation of the relational database ... (Please see attachment for figures and complete list of questions. ...continues

database - conversion: unnormalized relation, 1NF, 2NF, 3NF

The following unnormalized relation shows a modified version of the Nazca Cinemas case problem. A ShowingID attribute has been added to the relation. Each individual showing (a given movie in a given room on a given date at a given time) of a movie is given its own unique ShowingID. Using the modified version of the unnormalized ...continues

database systems - conversion: unnormalized relation, 1NF, 2NF, 3NF

Nazca Cinemas is a small movie theater that would like you to design a movie scheduling database system for them. The theater has four rooms (screens). Each room has its own unique ID and the seating capacity and screen size for each are recorded. Each movie is assigned a unique movie ID and its title and runtime are recorded. ...continues

Intro to database - Crow's Foot model; ERD; Entities

Meridian News publishes a daily newspaper and would like a database developed to maintain information about subscribers and subscriptions. Each subscriber is uniquely identified by a subscriber number and is also characterized by first name, last name, address, and phone number. Each subscription is uniquely identified by a subs ...continues

data

In your own words, explain the concept of normalization. What does normalization accomplish? What are the advantages of normalization? In general, how do you go about normalizing a relation?