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Q1- Describe how an ERD can be taken as a logical representation, and implemented into a physical representation in a database.
Q2- Find and explain some more advanced SQL queries that a DBA might use to find some specific information about a database.
Q3- Please try to find different sql statements. and Explain what they do. IF possible, show some of the output as well.
Q4- How do you determine the optimum number of redolog files, their size and the number of groups you shuld have for your databse?What is archivelog mode? What are the requirements for using archivelog mode? Describe what happens when in and not in archvelog mode.
Prepare an entity relationship diagram which models your proposed design. Write the SQL statements to create the database tables, relationships and populate each table with at least 10 records per table, where applicable
List the names of agents that placed an order for customer C003 or customer C006. List all pair of products names that are in the same city, along with their city name.
Write a SELECT statement which returns three columns: VendorName, InvoiceCount, and InvoiceSum. InvoiceCount is the count of the number of invoices, and InvoiceSum is the sum of the InvoiceTotal column.
Construct a query that will show the number of days that exist between the first invoice and last invoice, for each month, for each employee, using the DATEDIFF function
Based on the discussion of the Heather Sweeney Designs operational database (HSD) and dimensional database (HSD-DW) in the text, answer the following questions. Using the SQL statements shown in Figure 1, create the HSD-DW data-base in a DBMS
Development of an ER Diagram and Database Implementation- To give you practical experience in using Entity-Relationship and Relational Database modelling techniques
Construct a diagram using Rationale to map the arguments about a moral claim that you have identified in the article/case study: Include all supporting and objecting claims.
Pick one of the different types of SQL statements (data definition language, data manipulation language, or data control language). Describe how that type of statement is use.
Create a query based on the Agency table that includes the Agency, FirstName, LastName, and City fields, in that order. Save the query as AgenciesByCity, and then run it
In this assignment, you must examine the philosophical underpinnings of the economic system and its relationship to ethics and social justice by examining income support policies. You will also view the socially constructed ways of developing and ..
physical design and implementation it requires the use of a relational database management system. strayer university
Describe relationships with the example. Also illustrate degree of relationship for that example. Describe the different operations of relational algebra with suitable example each.
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