An owner's two-paragraph description becomes six entities and a crow's foot diagram in this IT163 Unit 2 exercise, and every noun left out is given a reason. Searches like "it 163 unit 2 assignment example", "it163 unit 2 sample" and "it163 unit 2 example" land here.
What a finished IT163 Unit 2 entity design exercise looks like
Four pages open on the scenario itself, a composite owner's account of restaurants and grocers calling in broken walk-in coolers, ice machines and reach-in freezers, with every noun underlined. A sorting table follows in three columns: entity candidates, attributes and rejected nouns. Van, invoice and dispatcher sit in the third column, each with a one-line reason; the invoice, for example, can be produced from call and parts data and would duplicate it if stored. Six entity boxes come next, CUSTOMER, EQUIPMENT UNIT, TECHNICIAN, SERVICE CALL, PART and CALL PART, each listing attributes with its identifier underlined. Relationship sentences read in both directions, and the diagram closes the paper in crow's foot notation, with CALL PART standing between calls and the parts each one consumes.
How a IT163 Unit 2 example is structured
Its sequence mirrors a designer's reasoning, so each stage visibly feeds the next. Noun analysis comes first because entities have to be found before they can be drawn. Attributes are assigned only after the entity list stabilizes, which is why two early candidates, phone and address, move from the entity column into CUSTOMER's attribute list with a note explaining the demotion. Identifiers are chosen next, and each one is defended: a serial number seems natural for equipment but is missing on older units, so a generated identifier takes its place. Relationships are stated as paired sentences with cardinality and optionality, since a diagram without them can be read two ways. An assumptions list sits just before the diagram, recording choices the scenario left open, such as one lead technician per call.
Scenario with nouns marked
The owner's account is reproduced as given and every candidate noun is underlined, so a reader can check that nothing in the description was skipped.
Candidates, attributes, rejects
A three-column sorting table records where each noun landed and why, including the derived invoice total that would only repeat facts stored elsewhere.
Six boxes with identifiers
Each entity lists its attributes with the identifier underlined; a generated equipment ID replaces the serial number that many older ice machines no longer display.
Paired relationship sentences
One customer owns one or more units; each unit belongs to exactly one customer. Every link is written both ways, with minimums and maximums stated.
Assumptions before the diagram
Five short assumptions, such as a single lead technician per call and no tracking of helpers, close the gaps the scenario leaves open.
Crow's foot diagram
Six boxes and five relationship lines in one consistent notation, with the associative CALL PART entity sitting between calls and the parts they consume.
Where marks go in IT163 Unit 2
Entity work in IT163 is graded on judgment, and the judgment shows in what gets left out. The most common deduction goes to attributes promoted into entities, a PHONE box or an ADDRESS box standing where a field belongs. Reports appear as entities almost as often, a MONTHLY SUMMARY drawn as though it stored data rather than presenting it. Relationships drawn as bare lines lose points in most sections because cardinality is the substance of the exercise. Calls and parts left joined directly, with no associative entity or even a note, is a recurring gap. Mixed notations, Chen diamonds beside crow's feet, draw comments. Derived values such as a stored invoice total, identifiers never named, and silent assumptions about the scenario each cost smaller amounts that add up quickly.
Get a IT163 Unit 2 example written to your instructions
Entity work depends on the scenario an IT163 section hands out, be it a veterinary practice, a bike shop or a campus club. Paste yours in as written, attach the Unit 2 rubric and instructions, and note any diagram notation your instructor names. Nothing is charged for the first custom sample, and it arrives within 24-48h.
IT163 Unit 2 questions, answered
What is the difference between an entity and an attribute?
An entity is a thing the business needs to keep several facts about, such as a customer or a service call. An attribute is one of those facts, such as a phone number or a call date. A useful test: if a noun has only one fact of its own and no relationships, it is probably an attribute of something larger.
Should the diagram use crow's foot or Chen notation?
Follow your instructions, because sections differ and some textbooks favor one style. Crow's foot is more common in Access-oriented courses since it maps closely onto the Relationships window. What matters most is consistency: one notation throughout, with cardinality shown on every line. The custom sample uses whichever notation your prompt names, or crow's foot if it names none.
Do I resolve many-to-many relationships now or later?
Sections split on timing. Some expect the associative entity in the Unit 2 diagram, while others accept the many-to-many line with a note and resolve it when tables are built. Either way, graders want evidence that you have spotted it. The sample resolves it here and says so, and can leave it flagged instead if your rubric asks for that.