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backpackers hotel has a bathroom with multiple showers so that many people can use it at once. The hotel follows traditional practice by allowing either men or women to use the bathroom, but not both at once. Thus when one or more women are in the bathroom, other women may enter but no men, and vice-versa. A sign on the door of the bathroom with a sliding marker indicates which of the three possible states the bathroom is in: Empty Women present Men present
Write the following procedures: woman_wants_to_enter, man_wants_to_enter, woman_leaves, man_leaves, using counters and sychronisation techniques to ensure that the correct behaviour will occur. Is your solution fair and correct? If so describe how it is fair and correct, otherwise describe the limitations to your solution.
Hhow can you change column name or what is a different way to write statement in SQL so it displays the amount column as money.
Explain the content of this document in natural language;Design the graph representation of document;
What criteria would you use in selecting a life-cycle model for the project?
Database Questions: What do you mean by data base scheme? What do you mean by cardinality ratio? What do you mean by degree of relation?
Compute the functional dependencies which exist in following table. After determining the functional dependencies, transform this table to an equivalent collection of the tables which are in third normal form.
You are interested in analyzing some hard-to-obtain data from two separate databases. Each database contains n numerical values.
Views are integral part of virtual private databases, yet views are utilized for many other reasons. Find out many other uses for views.
Create a state transition diagram that describes typical student states and how they change based on specific actions and events.
Create a structurally sound relational database schema showing the minimum number of fields, tables, and relationships between the tables.
Its a lead a project that will implement a new learning management system for your university. You have two key tasks: Task 1: Investigate learning management software packages that are available through application service providers.
Show all the data in each of the four tables. Do not show foreign key columns. Write names and e-mail addresses for all customers who have had a stove repair that cost more than $50.
Write SQL queries for the books database that perform each of the following tasks: Select all authors from the Authors table with the columns in the order lastName, firstName and authorID.
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