Understanding Multi-sheet Data

As your data grows, putting everything in one sheet becomes messy. That's where multi-sheet organization comes in.

Why Multiple Sheets?

Imagine tracking employees and their departments:

Single Sheet Problem:

Notice how "Engineering, Building A, 500000" is repeated? This creates:

• Redundancy: Same data stored multiple times

• Update issues: Change budget? Update every row!

• Inconsistency risk: What if one row says "Building A" and another "Bldg A"?

  The Solution: Separate Sheets

  Employees Sheet:

Departments Sheet:

Now department info is stored once, and we use Dept ID to connect the sheets!

The Lookup Concept

To combine information from different sheets, we use the concept of a lookup:

• Find the Dept ID from the employee

• Look up that ID in the Departments sheet

• Bring back the related information (name, location, budget)

  This is similar to SQL JOINs!

  In This Module

  You'll work with multi-sheet workbooks and understand how data relates across sheets.