IT133 · Unit 8

IT133 Unit 8 database table and query example

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A composite community tool library lends drills, ladders and pressure washers to about two hundred members, and the IT133 Unit 8 database table and query sample here records that lending in Access: typed fields with sensible sizes, primary keys, one enforced relationship, and three saved queries that answer questions a volunteer at the counter would actually ask.

What this page holds

Inside the .accdb file for this IT133 Unit 8 example: a tools table, a loans table joined to it, and saved queries for overdue items, categories and counts. Searches like "it 133 unit 8 assignment example", "it133 unit 8 sample" and "it133 unit 8 example" land here.

What a finished IT133 Unit 8 database table and query looks like

One .accdb file whose navigation pane shows two tables and three queries. Tools holds 40 composite records: ToolID as an AutoNumber primary key, ToolName as short text sized to 50 characters, Category, a Currency field for replacement value and a Yes/No field marking items that need a safety briefing. Loans holds 60 records with LoanID, a ToolID number field, member name, DateOut and DateDue as Date/Time fields, and DateReturned left blank for items still out. The Relationships window shows Tools joined to Loans one-to-many on ToolID with referential integrity enforced. A validation rule on DateDue rejects any date before DateOut, with validation text explaining why. The queries list overdue loans, tools by category sorted by name, and loan counts per tool, each saved under a name that says what it returns.

How a IT133 Unit 8 example is structured

The file is organized around one idea from early database work: each fact is stored once, in the table it describes. Tool details live only in Tools; Loans refers to a tool by its ID rather than retyping names, which is why the relationship exists and why enforcing it matters, since a loan can then never point at a tool that is not there. Field data types are chosen for what the data does: dates as Date/Time so they sort and compare correctly, money as Currency, the ID link as a Number matching the AutoNumber it references. Queries are saved objects rather than filters applied to a table view, and their criteria sit in the design grid where a grader can read them. A one-page design note lists every field, its type and size, and the reason for each choice.

Tools table

Forty records, an AutoNumber key, text fields sized to fit, a Currency replacement value and a Yes/No safety flag. Field descriptions in design view explain each field's purpose in a short phrase.

Loans table

Sixty lending records with dates stored as Date/Time, a blank DateReturned for tools still out, and a validation rule that refuses a due date earlier than the date the tool left the shelf.

One relationship, enforced

Tools to Loans, one-to-many on ToolID, with referential integrity turned on. The Relationships window is saved in its arranged state, so the join line and its one and infinity symbols are visible at a glance.

Three saved queries

Overdue Loans combines a blank return date with a due date before today; Tools by Category sorts by category and then name; Loan Count per Tool is a totals query grouping on ToolName and counting LoanID.

Field-by-field design note

A single page tables every field with its data type, size and reason, then states in one line what each query returns and which criteria produce it, so the file's logic is readable without opening Access.

Where marks go in IT133 Unit 8

Access work in IT133 tends to lose points on data types before anything else. Dates stored as short text sort alphabetically, so a query for overdue loans returns nonsense, and prices stored as text cannot be totaled. Tables with no primary key, or with a key on a field such as tool name that can repeat, fail the table design row in many sections. The relationship is the next gap: tables joined in a query but never related, or related without referential integrity when the prompt asks for it. Answers produced once through a datasheet filter vanish when the file closes and score nothing as saved queries. Criteria typed in the wrong row of the design grid, turning an AND into an OR, produce plausible but wrong results that graders check against expected counts.

Get a IT133 Unit 8 example written to your instructions

The IT133 Unit 8 prompt may supply a data set or describe one for you to build; either way, send it as written, rubric attached. Tables, relationship and queries are built to match in a working .accdb file, design note included, delivered in 24-48h. The first custom sample is free.

IT133 Unit 8 questions, answered

Why does my overdue query return no records?

Usually because the date field is stored as text, or the criteria sit on separate rows of the design grid. Text dates do not compare with today's date the way real dates do. Criteria on the same row must all be true together, while criteria on different rows mean either one. Checking the field's data type in design view settles the first cause quickly.

What if I use a Mac and cannot open Access?

Access runs only on Windows, which is why some sections provide a virtual lab or substitute an Excel-based database exercise. Your instructions usually explain the option for Mac users. The sample follows whichever version your prompt describes, a real .accdb file or a structured workbook with tables and filtered views, so it matches what your grader expects to open.

What is a primary key, and does every table need one?

A primary key is the field whose value is unique for every record, such as ToolID, so the database can tell records apart and link them to other tables. Nearly every table in an IT133 exercise should have one, and AutoNumber is the usual choice when no natural unique value exists. Names and dates make poor keys because they repeat.