M365 Show Podcast

Excel Is NOT Your Database: Stop The Power Apps Lie

Excel is powerful—but it is NOT a database. And if your Power Apps still run on an Excel workbook, you are seconds away from data loss, concurrency collisions, governance gaps, and a credibility crisis you will not see until it’s too late. In this episode, we break down the biggest lie Power Apps makers tell themselves:
“Excel is fine for now.”
It isn’t. It was never meant to handle multi-user writes, relational integrity, or auditable governance. You’ll learn why your spreadsheet behaves like a trapdoor the moment your app goes into production—and how Dataverse fixes the root causes with structure, security, and transactional integrity. We also walk through the exact migration path from Excel to Dataverse—with the one decision that prevents 80% of all Power Apps failures. The Lie: Why Excel Feels Safe but Fails Under Pressure Excel feels easy because it’s forgiving. Anyone can edit anything, anywhere, without structure. That freedom works beautifully for analysis and prototyping… but collapses instantly when used as a shared operational data source. We uncover the hidden risks that make Excel the most expensive “free tool” in your stack:

  • Silent data corruption that hides for months
  • Last-save-wins concurrency that destroys valid updates
  • No audit trail for compliance or accountability
  • No referential integrity to keep relationships intact
  • No schema enforcement—columns mutate as users improvise
  • Drift between personal copies, SharePoint copies, emailed copies
  • Impossible version control for multi-user changes
  • Fragile formulas that break when tabs or column names shift
Excel is brilliant for modeling, exploration, and individual analysis—but the moment multiple people enter or depend on the data, it becomes a liability. Why This Actually Matters: The Real Cost of Confusion This episode dives into the three invisible forces that turn Excel into a silent operational threat: data loss, concurrency failures, and governance gaps. 1. Data Loss (The Silent Killer) Excel rarely screams when something goes wrong. It quietly:
  • Drops decimals
  • Truncates strings
  • Overwrites formulas
  • Breaks references
  • Misformats IDs
  • Loses rows during filters
  • Saves partial data during sync conflicts
You think the file is fine—until Finance catches a discrepancy, or your Power App reports inconsistent results that you can’t reproduce. 2. Concurrency (The Roulette Wheel of Edits) Two people save a workbook at once. Who wins?
Whoever clicked “Save” last. That single missing guardrail causes:
  • Overwritten customer data
  • Inconsistent credit limits
  • Conflicting addresses
  • Lost comments or notes
  • Stale reads in Power Apps
  • Duplicate or contradictory updates
Excel has no transactions, no row locks, no version checks, and no reconciliation process. Dataverse fixes all of that. 3. Governance (The Black Hole) Excel’s biggest flaw?
It assumes humans will behave. No required fields, no types, no controlled vocabularies, no audit log, no role-based security, no lineage—and no way to prove who changed what, when, or why. Auditors hate this.
Your future self hates this.
Your business eventually pays for this. The Three Failure Categories You Keep Stepping On This episode highlights the three fatal failure patterns that surface the moment Excel pretends to be a database: Failure 1: Data Loss Through Structure Drift Excel allows anything in any cell. Dataverse requires meaning. That difference saves you. Failure 2: Concurrency Without Consequences Multiple users editing the same file? That’s not collaboration. It’s corruption waiting to happen. Failure 3: Governance Gaps That Create Risk If you can’t explain your data lineage, you can’t secure or audit it. Dataverse gives you governance “for free” simply by existing. Enter Dataverse — The System Excel Was Never Meant to Be Once we tear down the lie, we reveal the replacement:
Dataverse.
Not just a storage engine—a governance, security, and integrity backbone. In this episode you’ll learn exactly what Dataverse fixes: A Real Schema
  • Required fields
  • Proper data types
  • Lookup relationships
  • Choice fields with controlled vocabularies
  • Business rules
  • Primary/alternate keys
Real Security
  • Role-based access
  • Row-level ownership
  • Field-level restrictions
  • Teams and business units
  • DLP policies
Real Integrity
  • ACID transactions
  • Referential constraints
  • Auditing
  • Change tracking
  • Cascading updates
  • Server-side validation
Real Performance
  • Indexes
  • Optimized queries
  • Multi-user concurrency
  • Scalable storage
  • Predictable API behavior
Dataverse doesn’t trust users—and that’s why it works. The Right Architecture: Dataverse + Power Apps + Fabric We also break down where Dataverse fits in your data ecosystem:
  • Dataverse → operational truth, transactions, security
  • Fabric Lakehouse → analytics, history, large datasets
  • Azure SQL → specialty OLTP or legacy systems
  • Power BI → reporting across operational + analytical layers
This layered architecture replaces the spreadsheet-as-brain model with a sustainable, scalable strategy. Your 10-Step Migration Plan We give you a practical, no-drama path to move from Excel to Dataverse safely:
  1. Inventory and classify your spreadsheets
  2. Identify entities, keys, relationships
  3. Build the Dataverse schema correctly
  4. Establish security and governance
  5. Define data quality rules
  6. Prepare Power Query transformations
  7. Validate loads and dedupe
  8. Build model-driven foundations
  9. Perform a staged cutover
  10. Deprecate Excel and enforce Dataverse as the source of truth
Follow this plan and your app stops gambling with your data. Key Takeaway Excel tracks. Dataverse governs.
If your Power Apps depend on Excel, you don’t have a system—
you have an unstable spreadsheet wearing a badge it didn’t earn. When you switch to Dataverse, you gain integrity, auditability, role-based security, real relationships, and a platform that protects your data even when humans don’t. Call to Action If this episode finally broke the “Excel is good enough” myth, do the strategic thing: Subscribe, enable notifications, and catch the next episode where we walk through Dataverse modeling:
  • mandatory keys
  • schemas
  • relationships
  • security
  • validation
  • and how to prevent 99% of citizen-developer data failures
Your next outage is optional.
Your data integrity doesn’t have to depend on luck.
Choose structure. Choose Dataverse.

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