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For this phase, you are required to create an ER Diagram that
For this phase, you are required to create an ER Diagram that will facilitate the development of CMS?s company-wide database. It must be created using ER Assistant and include entities and attributes, relationships, and accompanying notes. You must take a screenshot of your ERD while it is displayed in ER Assistant and paste the screenshot into a Word document. Make sure that the ERD fits on a single sheet and is legible. Accompanying notes must be included on a separate sheet of the document.
CMS PROJECT ? PHASE I INSTRUCTIONS
CMS Systems, Inc. is a company that provides information systems consulting services to
companies in the telecom industry in the United States and the United Kingdom. Due to its
success, CMS is hoping to expand its operations into other parts of Europe. Despite its large size,
CMS currently uses a manual/spreadsheet-based process for maintaining employee and client
data. Management has now decided to implement a company-wide database that will serve all of
CMS currently employs 1,500 individuals (900 in the US and 600 in the UK) who serve as
systems analysts, developers, managers, testers, maintenance engineers, accountants, lawyers,
and sales representatives. Each employee has a first name, last name, unique CMS ID, office
location, email address, salary, title, level, and supervisor.
CMS has more than 200 clients in the US and UK. Clients are identified by various names by
CMS associates. As such, they represent a source of confusion for the company. The legal
department refers to clients by their legal names, while the sales and consulting departments
refer to them by a more common name. One example is British Telecom. CMS?s legal team uses
its full legal name ?British Telecom, Ltd.,? while the sales force and consultants refer to it as
?BT.? The accounting department uses a mixture of legal and common names to identify clients.
Thus, to avoid confusion, both legal and common names must be available to all users. Data that
must be kept about clients include client names, an address (city, state, zip, country), and contact
information (discussed below).
Clients have contacts within their companies that CMS employees must utilize. For example, the
accounting department must know a client?s billing contact in order to know where to send the
bill. Maintenance engineers must know a client?s systems engineering contact to know with
whom to speak when a problem arises. CMS?s sales representatives must know a client?s sales
contact to determine who is responsible for the buying decisions at a client site. Although only
these three contact ?types? are currently used by CMS, it is foreseeable that additional contact
types might be useful as the company expands into other parts of the world. Currently, a client
has only one billing contact, one systems engineering contact, and one sales contact at any given
time. This structure is not expected to change (that is, more than one billing contact per client as
of a particular point in time is not anticipated); however, it is important to retain all contact
information over time. That is, when one contact is replaced by another contact, it is essential to
retain information about the original contact. For example, assume an invoice is sent to Contact
A, who is later replaced by Contact B. If the invoice is lost, CMS must have an audit trail to
show that it was sent to Contact A (who was the known contact for the client at that time).
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Clients can have one or more contracts with CMS to provide a variety of consulting services. For
example, a single client might have one contract for maintenance of an existing system and also
have another contract (sometimes called a work order by the sales force) for the development of
a new system.
Some clients are billed based upon negotiated contracts, which stipulate a pre-determined
amount for charges regardless of the number of hours that employees actually work on the
contracts. Such contracts are called ?fixed price? contracts. Other clients are billed based on the
total number of hours provided by CMS employees multiplied by a rate per employee type per
employee hour. These arrangements are called ?T&M ? Time and Materials? contracts. T&M
contracts often specify a maximum number of hours for which the client is willing to pay. CMS
managers must ensure that when these maximum (cap) amounts are exceeded, the clients are not
billed for such additional hours.
For T&M contracts, the rate per hour for each consultant is determined by the employee?s level
of expertise. For example, a client might pay $100/hour for an employee who is at the level of
Systems Analyst I. That same client would pay $250/hour for an employee designated as a
Manager Level II.
Although T&M and Fixed Price contracts are the only two types of contracts currently used by
CMS, it is likely that other types of contracts will be used in the near future.
All CMS employees must keep a record of the time they spend working for each client. Because
employees can work for more than one client and perform different functions for each client,
CMS utilizes ?project management? to keep track of employee assignments to client contracts.
Employees can be assigned to many different projects throughout their tenure. They also can be
assigned to more than one project at a given time. In fact, it is not unusual for an employee to
spend time on two or more different projects within the same day. Likewise, projects can consist
of many different employees. Project assignments change over time. For example, Employee
?A? may work on Project ?X? during January, and, in February, that same employee may be
reassigned to Project ?Y.? It is important to maintain records of the dates for which each
employee is assigned to each project. Additionally, each project has a manager who oversees its
progress and ensures that contracts are fulfilled and profitable (e.g., U.S. project managers try to
prevent hours worked in excess of the maximum allowed by a fixed price contract).
Just as a client can have more than one contract with CMS, a contract can consist of more than
one project. For example, a contract for the development of a new system could be fulfilled in
multiple phases. Phase I could include implementation at one client site using a group of
consultants in close proximity to that site. Phase II could include implementation at a different
site with a potentially different set of consultants. Both of these phases are considered separate
projects, even though they are governed by the same contract. To further complicate matters, if
such a contract specifies a maximum number of hours for overall implementation, the project
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managers of each project will have to agree how to split up the cap amounts between the two
projects and maintain appropriate data about the split.
The number of hours worked for each employee on each project must be recorded on a daily
basis. Employees currently log their time using an Excel worksheet. An example of this
worksheet is presented below. Notice that the employee?s supervisor is listed on the worksheet.
This supervisor may or may not be the same person as the project manager. Each employee is
assigned to one supervisor, and each supervisor manages one or more employees. The concepts
of supervisor and project manager have completely different meanings at CMS. A supervisor
manages an employee with respect to evaluations, vacation requests, raises, etc. A project
manager manages a project, allocating the time of employees assigned to the project. A project
manager is not required to sign off on an employee?s timesheet. A supervisor, however, is
required to approve his/her employees? timesheets by placing his/her initials beside his/her name.
Part A: Deliverable
For this phase, you are required to create an ER Diagram that will facilitate the development of
CMS?s company-wide database. It must be created using ER Assistant and include entities and
attributes, relationships, and accompanying notes. You must take a screenshot of your ERD while
it is displayed in ER Assistant and paste the screenshot into a Word document. Make sure that the
ERD fits on a single sheet and is legible. Accompanying notes must be included on a separate
sheet of the document. Name this Word document ?CMS Project Part A ? your last name
followed by your first initial.?
Example: CMS Project Part A ? SmithJ.doc
The scope of the database includes all entities referenced above. The first goal of this phase of
development is to support a timekeeping system that will replace the spreadsheet process
illustrated above. Note that you will not actually create the timekeeping system. You are
responsible only for designing the database that will be used by the system.
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Part B: Background
After much deliberation, CMS has decided to broaden its operations by expanding into various
parts of Europe and also Canada. It plans to recruit employees from Canada, Italy, France, and
Ireland. Each of these countries offers different benefit packages. Presently, under the manual
spreadsheet system, human resource personnel have to maintain only two types of benefit
allotments. In the newly expanded company, this manual process will be unmanageable.
The following table lists the different benefit packages in each country. Some characteristics are
unique to each country while others are unique to a region.
In the same manner that employees must track the time they spend working on projects, they
must also log the days they use as holidays and vacation. Below is a sample timesheet for
recording benefit time taken. Note that this benefit section exists on the same timesheet that is
used to log hours to projects, but benefits are not related to projects.
In addition to the need to accommodate benefit tracking in the new database, a change has
occurred since the last iteration. In Part A, CMS stated, ?a client has only one billing contact, one
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systems engineering contact, and one sales contact at any given time. This structure is not
expected to change (that is, more than one billing contact per client as of a particular point in
time is not anticipated).? Recent developments from a newly acquired client have caused this
assertion to no longer be true. France Telemobile, Inc. is a new client in France and has three
different systems engineering contacts to support its one contract with CMS. Thus, a change in
initial design is required.
Finally, CMS is implementing two new types of contracts, maintenance and license, to be added
to its list of possible contracts.
Currently, maintenance is included as part of an initial work order. In keeping with the rules of
accounting and revenue recognition for software providers, maintenance is an important feature
of a contract and has special rules that affect how much revenue can be recognized for licenses.
To simplify its procedures, the company will be issuing separate contracts for maintenance to
clearly distinguish between license revenue, which can be recognized at the time of system
delivery, and maintenance revenue, which in most cases must be recognized over the duration of
the maintenance agreement.
Many of the features of CMS?s custom work orders have evolved into a standard set of templates
that will be sold as a package to other companies to expand CMS?s client base. Therefore, the
company has created various products that incorporate the most widely used features of its
custom development initiatives. The products are called TeleTrak-BP, TeleTrak-FM, and
TeleSource. Each product will be sold as an out-of-the-box solution to tracking usage and
subscriptions in the Telecom industry. Each product will be sold under a license contract.
Presently, a license contract will be issued for exactly one product, but it is possible that a license
agreement will be written in the future that will cover multiple products as new products are
Part B: Deliverable:
Using ER Assistant, modify your original ERD to accommodate the requirement to allow more
than one instance of a given contact type per contract. Also, include new entities and
relationships to support benefit tracking in all countries. Depending on your initial design, you
may or may not have to modify your ERD to accommodate the new contract types (License and
Maintenance). You will also have to account for the introduction of products in the business
In a separate Word document, take a screenshot of your revised ERD and paste it in. Include
After completing your new ER Diagram, convert the diagram into tables with primary keys and
foreign keys as appropriate. Use SQL Server to create your tables. Be sure to enforce referential
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integrity in your CREATE TABLE statements using ?on delete,? ?on update,? etc., where
As in Part A, your ERD screenshot must be able to legibly fit on a single sheet in the Word
document. To receive credit for your table conversions, include the SQL queries used to generate
the tables and paste them into your Word document. Also execute the following command for
each table and include results in your document: exec sp_help [table name]
Name this document ?CMS Project Part B ? your last name followed by your first initial.?
Screenshots are required each SQL, DML, DDL, and DCL statement for a grade to be given.
Note: 1 screenshot is not the idea; however, multiple screenshots along the way is the goal.
Using the link provided in Blackboard, upload your 2 documents for phase I of this project by
11:59 p.m. (ET) on Monday of Module/Week 5.
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This question was answered on: Feb 21, 2020
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