Use the SaleCo ERD listed below and the provided SQL scripts to…
Use the SaleCo ERD listed below and the provided SQL scripts to construct its relational database and answer the following queries. Note: Purchases = LINE_PRICE * LINE_UNITS Note: Inventory value = P_QOH * P_PRICE (2 pts) How many invoices are there? (3 pts) List the invoice numbers and the invoice dates. (2 pts) How […]
Rivers, lakes, and oceans are bodies of water. Each river, ocean,…
Rivers, lakes, and oceans are bodies of water. Each river, ocean, and lake has a name. Each river has a length. Each lake has an area and a depth. Each ocean has a volume. Volume Size Select is an attribute of a subtype entity is an attribute of a supertype entity is not an attribute […]
-draw an ER model clearly denoting maximum and minimum cardinality…
-draw an ER model clearly denoting maximum and minimum cardinality constraints. -Write one-liner and four sentences for each diagram (statements that specify the minimum and maximum cardinality), and the number of tables needed. Post the Primary and foreign keys and any available attributes. -diagram must be complete in all respects with all notations QUESTION: […]
1. Compare and contrast the tuple relational calculus with domain…
1. Compare and contrast the tuple relational calculus with domain relational calculus. Specifically, discuss the distinction between tuple and domain variables. 2. Answer the following questions considering the Hotel schema I have attached below.a) πhotelName (Hotel ⋈ Hotel.hotelNo = Room.hotelNo (σprice > 50(Room)) ).b) Guest ⊐⊲ (σdateTo≥ ‘1-Jan-2007’ (Booking)). Hotel Schema Attachment:
most important steps in solving a math problem is to understand…
most important steps in solving a math problem is to understand what the problem is asking you to do. Read the problem carefully and make sure you understand what is being asked. Look for keywords and phrases that indicate what operation(s) you need to perform to solve the problem. Identify any unknowns or variables that […]
work on this task, use the “Labs on Demand Assessment Environment…
work on this task, use the “Labs on Demand Assessment Environment and DVD Database” found in the Web Links section. In this environment, you will be able to write and test your PostgreSQL code and access the database to complete this task. Plan for and compose the sections of a real-world business report that […]
Explain how the stored procedure can be run on a schedule to ensure…
Explain how the stored procedure can be run on a schedule to ensure data freshness. Can you give me a few examples of how this could be done in postgresSQL I am very tired and dont feel like watching 10 youtube videos until I find what I’d use.
1 . Which of the below is not a single row function? a. ROWNUM…
1 . Which of the below is not a single row function? a. ROWNUM b. SYSDATE c. MONTHS_BETWEEN d. SQRT 2. Which of the below clauses of an SQL statement is the 3rd one in the order of execution? a. WHERE b. […]
ERROR 1054 (42S22): Unknown column ‘ship’ in ‘field list’ for…
ERROR 1054 (42S22): Unknown column ‘ship’ in ‘field list’ for mysql> SELECT ship.SHIPNUM, ship,SHIPNAME, avg(WEIGHT) FROM cruise JOIN ship ON cruise.SHIPNUM = ship.SHIPNUM JOIN visit ON cruise.CRUISENUM = visit.CRUISENUM WHERE visit.PORTNAME = “MIAMI”;
Database Model: KimTay The management of KimTay Pet Supplies (a…
Database Model: KimTay The management of KimTay Pet Supplies (a supplier of pet supplies, food, and accessories located in Cody, Wyoming) has determined that the company’s recent growth no longer makes it feasible to maintain customer, invoice, and inventory data using its manual systems. In addition, KimTay Pet Supplies wants to build an Internet presence. […]
