1 Introduction
In this scenario, ShaDey Inc. has a centralized business glossary, but governance has broken down in practice. The CDM was created by a consulting firm and never maintained. Teams built their own LDMs independently. The PDM was inherited from a legacy SAP migration and ad-hoc analytics projects. The result: glossary terms exist on paper, but they do not match what is actually implemented.
1. The glossary exists, but teams disagree on definitions (e.g., "Active Customer" means different things to Marketing, Finance, and Engineering).
2. CDM uses SAP-influenced names like "Account" and "Material" instead of business-friendly "Customer" and "Product."
3. LDM attributes are abbreviated, undocumented, and vary by team.
4. PDM tables are named after source systems (kna1_extract, mara_data) or ad-hoc projects (cust_data_v2_FINAL).
5. AI/ML teams cannot trust any feature because lineage is broken.
Maturity: DAMA DMBOK Level 1–2 (Initial/Repeatable)  |  Glossary Status: Exists but unenforced and outdated  |  Naming Convention: None; each team uses its own  |  Lineage: Broken; cannot trace glossary to PDM  |  Data Contracts: Informal or absent

Compare with Scenario 1: Aligned Governance to see what proper alignment looks like.

2 Centralized Business Glossary
The same 13 enterprise terms exist in the glossary, but definitions are contested, ownership is unclear, and the mapping to data models is inconsistent or broken. Expand each card to see the misalignment.
Customer
Customer Management High
A person or organization that has purchased from or registered with ShaDey Inc. through any channel (in-store, e-commerce, wholesale).
Full Metadata: Misalignment Details
SynonymsAccount, Buyer, Patron, Shopper
Related TermsActive Customer, Loyalty Tier, Customer Type
Data OwnerUnclear (claimed by both Sales Ops and Marketing)
Data StewardVacant since Q2 2025
Example Usage"How many new customers acquired in Q4?" (answer differs depending on which table you query)
Governing PolicyGDPR policy exists but PII masking is inconsistent across tables
CDM EntityAccount, SAP-influenced name, not matching glossary term "Customer"
LDM Entitycust, abbreviated, 5 attributes, no business rules documented
PDM Tablekna1_extract (SAP replica), cust_data_v2 (analytics), customer_export_final_FINAL (ad-hoc)
ConsistencyBroken. 3 different PDM tables, none matching glossary naming.
GlossaryCustomer
CDMAccount
LDMcust
PDMkna1_extract
Active Customer
Customer Management High
A customer who has completed at least one purchase transaction within a defined trailing period from the measurement date. Warning: the "defined period" differs across three teams.
Full Metadata: Conflicting Definitions
SynonymsCurrent Customer, Engaged Customer
Related TermsCustomer, Lapsed Customer, Loyalty Tier
Data OwnerDisputed (Marketing, Finance, and Engineering each claim authority)
Data StewardNone assigned
Governing PolicyNo enterprise-wide standard. Each team applies its own window.
CDMNot explicitly modeled; assumed to be a flag on Account
LDMcust.active_yn (CHAR(1)), no documented derivation rule
PDMkna1_extract.AKTIV (SAP field), cust_data_v2.is_active (Marketing logic), rpt_active_cust (Finance snapshot)
Consistency3 conflicting definitions across teams. Reports never agree.
Conflicting Definitions by Team
MarketingPurchased OR browsed within 6 months (includes website visits)
FinanceCompleted purchase within trailing 12 months (revenue-based only)
EngineeringLast login within 90 days (app engagement, no purchase required)
GlossaryActive Customer
CDMNot modeled
LDMactive_yn
PDM3 tables
Product
Merchandising High
A sellable item in ShaDey Inc.'s portfolio, identified by a unique SKU, belonging to a Category within a Department.
Full Metadata: Misalignment Details
SynonymsItem, SKU, Article, Material (SAP legacy)
Related TermsCategory, Department, Brand, Variant, Supplier
Data OwnerVP, Merchandising (owns glossary term but not data models)
Data StewardAssigned but has no authority over PDM naming
Governing PolicySKU format should be [DEPT]-[CAT]-[SEQ] but SAP uses MATNR (18-digit) and e-commerce uses its own product_id
CDMMaterial, SAP-influenced name. Business calls it "Product"; CDM calls it "Material".
LDMmat, abbreviated, 4 attributes (matnr, maktx, mtart, matkl). No business rule documentation.
PDMmara_data (SAP replica), product_catalog_export (e-commerce), item_master (warehouse)
ConsistencyBroken. "Product" in glossary → "Material" in CDM → "mat" in LDM → "mara_data" in PDM.
GlossaryProduct
CDMMaterial
LDMmat
PDMmara_data
Sale
Sales & Revenue High
A completed purchase transaction in which a customer acquires one or more products through a channel at an agreed price.
Full Metadata: Misalignment Details
SynonymsTransaction, Purchase, Sales Transaction, Billing Document
Related TermsNet Sales, Order, Return, Promotion, Channel
Data OwnerHead of Sales Operations
CDMBillingDocument, SAP VBRK-influenced name instead of "SalesTransaction"
LDMbilling_doc, mixes orders and sales in the same entity, no clear grain
PDMvbrk_vbrp_joined (SAP replica) and pos_transactions (POS system). Not reconciled.
ConsistencyBroken. "Sale" → "BillingDocument" → "billing_doc" → "vbrk_vbrp_joined". Sales mixed with orders.
GlossarySale
CDMBillingDocument
LDMbilling_doc
PDMvbrk_vbrp_joined
Net Sales
Sales & Revenue High
Gross sales revenue minus returns, discounts, allowances, and sales taxes. Warning: three different calculation formulas exist in production.
Full Metadata: Formula Conflicts
SynonymsRevenue, Net Revenue, Top Line
Related TermsSale, Return, Promotion, Gross Sales
Data OwnerCFO owns the definition, but Marketing and Ops use their own formulas
Data StewardFinance analyst (no cross-team authority)
Governing PolicyNo single enterprise formula. Each dashboard implements its own calculation.
CDMNot explicitly modeled; assumed to be derivable from BillingDocument
LDMNo calculated field defined. Each team computes in their own SQL.
PDMrpt_revenue_daily (Finance), mktg_net_sales_cube (Marketing), ops_sales_summary (Operations)
ConsistencyBroken. 3 formulas, 3 tables, none matching. Leadership sees 3 different "Net Sales" numbers.
Conflicting Formulas by Team
FinanceSUM(gross_amount) - SUM(returns) - SUM(discounts) - SUM(tax)
MarketingSUM(gross_amount) - SUM(returns) (excludes discounts and tax)
OperationsSUM(line_total) (pre-aggregated, includes tax, excludes returns)
GlossaryNet Sales
CDMNot modeled
LDMNot defined
PDM3 tables
Inventory On Hand
Supply Chain High
The quantity of a product physically available for sale at a specific location, measured in sellable units, excluding reserved, damaged, or in-transit stock.
Full Metadata: Misalignment Details
SynonymsStock on Hand, Available Inventory, SOH, Unrestricted Stock
Related TermsInventory, Safety Stock, Reorder Point, Days of Supply
Data OwnerVP, Supply Chain
Governing PolicyGlossary says "excludes reserved" but SAP table MARD includes all stock types in LABST field. Warehouse system tracks sellable only.
CDMStockPosition, different name from glossary's "Inventory"
LDMstk_pos, abbreviated, mixes stock types (unrestricted + reserved + blocked)
PDMmard_extract (SAP), wms_inventory_live (WMS). Numbers differ by 8–12% due to definition mismatch.
ConsistencyBroken. "On Hand" means different things in SAP vs. WMS. Permanent 8–12% variance.
GlossaryInventory On Hand
CDMStockPosition
LDMstk_pos
PDMmard_extract
Supplier
Procurement Medium
An external organization that manufactures, distributes, or imports products sold by ShaDey Inc., bound by a procurement contract.
Full Metadata: Misalignment Details
SynonymsVendor, Manufacturer, Distributor
Related TermsProduct, Lead Time, Quality Rating, Contract
Data OwnerVP, Procurement
CDMVendor, SAP-influenced name. Glossary says "Supplier"; CDM says "Vendor".
LDMvndr, abbreviated, 4 attributes (lifnr, name1, land1, ktokk). No quality rating.
PDMlfa1_extract (SAP replica), uses SAP field names (LIFNR, NAME1, LAND1)
ConsistencyBroken. "Supplier" → "Vendor" → "vndr" → "lfa1_extract". Names diverge at every layer.
GlossarySupplier
CDMVendor
LDMvndr
PDMlfa1_extract
Promotion
Merchandising Medium
A time-bound pricing incentive (discount, BOGO, coupon, markdown) applied to one or more products or categories to drive sales volume.
Full Metadata: Misalignment Details
SynonymsDeal, Campaign, Offer, Markdown, Condition (SAP)
Data OwnerVP, Merchandising
CDMPricingCondition, SAP condition record concept, not "Promotion" from the glossary
LDMcond_rec, mixes permanent pricing and promotions in one entity
PDMkonv_extract (SAP KONV replica), no distinction between promo and standard pricing
ConsistencyPartially broken. Promotions and pricing are conflated in all layers below the glossary.
GlossaryPromotion
CDMPricingCondition
LDMcond_rec
PDMkonv_extract
Order
Sales & Revenue High
A customer's expressed intent to purchase one or more products. An order may be pending, confirmed, fulfilled, or cancelled. Distinct from a completed sale.
Full Metadata: Misalignment Details
SynonymsSales Order, SO, Sales Document
Data OwnerHead of Sales Operations
CDMSalesDocument, SAP term, mixes orders, quotes, and contracts in one entity type
LDMsd_doc, generic, no distinction between order subtypes. Status field is a free-text VARCHAR.
PDMvbak_vbap_joined (SAP), ecom_orders (e-commerce). Not reconciled; same order can appear in both.
ConsistencyBroken. Orders mixed with quotes and contracts. Duplicates across 2 PDM tables.
GlossaryOrder
CDMSalesDocument
LDMsd_doc
PDMvbak_vbap_joined
Shipment
Logistics Medium
A physical movement of goods from a warehouse or distribution center to a customer delivery address or store location.
Full Metadata: Misalignment Details
SynonymsDelivery, Dispatch, Consignment, Outbound Delivery
Data OwnerVP, Logistics & Distribution
CDMDelivery, SAP calls it "Delivery" (LIKP); glossary says "Shipment"
LDMdeliv, abbreviated, 5 attributes. Ship and delivery dates in different formats (DATE vs. VARCHAR).
PDMlikp_lips_joined (SAP replica), shipment_tracking (3PL system). No FK between them.
ConsistencyPartially broken. Two systems track the same physical shipment with no link.
GlossaryShipment
CDMDelivery
LDMdeliv
PDMlikp_lips_joined
Return
Sales & Revenue Medium
A customer-initiated reversal of a completed sale, resulting in the return of goods and issuance of a refund or credit to the customer.
Full Metadata: Misalignment Details
SynonymsRefund, Credit, Reverse Sale, Credit Memo
Data OwnerHead of Sales Operations
CDMNot separately modeled; returns are a subtype of SalesDocument (doc type = RE)
LDMMixed into sd_doc with a type flag. No dedicated return entity.
PDMEmbedded in vbak_vbap_joined WHERE doc_type = 'RE'. Requires filtering, easy to miss and count returns as sales.
ConsistencyBroken. Returns are not modeled separately; they are hidden inside sales tables, causing double-counting.
GlossaryReturn
CDMSalesDocument
LDMsd_doc (mixed)
PDMvbak_vbap (filtered)
Feature Store Record
Data Science High
A pre-computed, versioned, point-in-time correct feature vector derived from governed data products, stored in the centralized ML feature store.
Full Metadata: Misalignment Details
SynonymsFeature Vector, ML Feature, Feature Row
Data OwnerHead of Data Science
Governing PolicyNo feature governance. Each data scientist creates features ad-hoc from whatever tables they can find.
CDMNot modeled; CDM predates AI/ML initiatives by 3 years
LDMNot modeled
PDMds_features_alice, ml_features_v3_bob, feature_cache_tmp, personal schemas, no catalog
ConsistencyBroken. No CDM/LDM mapping. Features built from untraceable ad-hoc SQL. No versioning, no lineage.
GlossaryFeature Store Record
CDMNot modeled
LDMNot modeled
PDMad-hoc tables
Model Training Dataset
Data Science High
A point-in-time correct, labeled dataset assembled for training or retraining an ML model. Should be immutable with full lineage.
Full Metadata: Misalignment Details
SynonymsTraining Set, ML Dataset, Training Snapshot
Data OwnerHead of Data Science
Governing PolicyNo policy. Datasets created from personal feature tables, not reproducible, may contain PII.
CDMNot modeled
LDMNot modeled
PDMtraining_data_churn_v2_FINAL, alice_train_set_backup, mutable, no versioning, stored in personal schemas
ConsistencyBroken. No lineage, not reproducible, PII leakage risk, no immutability guarantee.
GlossaryTraining Dataset
CDMNot modeled
LDMNot modeled
PDMad-hoc files
3 Enterprise Data Models
The CDM, LDM, and PDM exist but were built independently. Entity names, attribute names, and physical table names do not align with the business glossary, or with each other.
Conceptual Data Model (SAP-Influenced)

11 entities, but names are derived from SAP technical terminology, not the business glossary. A consultant built this from SAP transaction codes, not from business workshops.

Account
Glossary: "Customer". SAP-derived name. Mismatch
Material
Glossary: "Product". SAP MARA-derived. Mismatch
Plant
Glossary: "Store / Channel". SAP WERKS concept. Mismatch
Vendor
Glossary: "Supplier". SAP LFA1-derived. Mismatch
StockPosition
Glossary: "Inventory". Partially aligned; includes reserved stock.
SalesDocument
Glossary: "Order" + "Sale" + "Return" mixed. Major mismatch
BillingDocument
Glossary: "Sale". SAP VBRK-derived. Mismatch
PricingCondition
Glossary: "Promotion". Mixes promotions with permanent pricing.
Delivery
Glossary: "Shipment". SAP LIKP name. Close but different.
CreditMemo
Return subtype, financial view only. Physical return not modeled.
(ML not in CDM)
AI/ML FeatureSet and Training Dataset are not represented. CDM predates ML.
The CDM was built by reverse-engineering SAP tables, not by modeling business concepts. Entity names like "Account", "Material", "Plant", and "Vendor" are SAP terminology that business users do not recognize. The glossary-to-CDM link is broken at the first step.
Logical Data Model (Inconsistent Attributes)
Customer (as "cust"): 5 abbreviated attributes
AttributeTypeConstraintGlossary Link
kunnrVARCHAR(10)PKSAP field name, not "customer_id"
name1VARCHAR(40)NOT NULLSAP field name, should be "full_name"
emailVARCHAR(100)Length too short (max 100 vs. RFC 5321 max 254)
active_ynCHAR(1)Y/N flag, no derivation rule documented
cust_typeVARCHAR(20)Free-text, not ENUM. Values: "retail", "Retail", "RETAIL", "b2b", etc.
Compared to Scenario 1, this LDM is missing: loyalty_tier, registration_date, preferred_channel, ltv_segment, and primary_store_id. No SCD tracking. No business rules documented.
Supplier (as "vndr"): 4 abbreviated attributes
AttributeTypeConstraintGlossary Link
lifnrVARCHAR(10)PKSAP field name, not "supplier_id"
name1VARCHAR(40)NOT NULLSAP name, should be "supplier_name"
land1CHAR(3)SAP country field, not "country_code" (ISO 3166)
ktokkVARCHAR(4)SAP account group. No business meaning documented.
Missing: lead_time_days, quality_rating, contract_start_date, payment_terms, is_certified, primary_category_id. The LDM has 4 of the 10 attributes needed.
Physical Data Model (Ad-Hoc Tables)

No naming convention. Tables are named after source systems, project names, or developer initials. Multiple tables for the same concept with no reconciliation.

kna1_extract (SAP customer replica)
CREATE TABLE kna1_extract ( KUNNR VARCHAR(10) PRIMARY KEY, -- SAP customer number, not UUID NAME1 VARCHAR(40), -- SAP field name, not "full_name" NAME2 VARCHAR(40), -- no glossary mapping ORT01 VARCHAR(40), -- city in SAP German abbrev LAND1 CHAR(3), -- country code AKTIV CHAR(1), -- active flag, no derivation rule ERDAT VARCHAR(8) -- date as YYYYMMDD string, not DATE type );
cust_data_v2 (analytics team ad-hoc)
CREATE TABLE cust_data_v2 ( id INT IDENTITY PRIMARY KEY, -- auto-increment, no business key cust_num VARCHAR(20), -- sometimes KUNNR, sometimes email cust_name VARCHAR(100), -- concatenated, inconsistent format is_active BOOLEAN, -- Marketing's 6-month definition segment VARCHAR(50), -- free-text: "high value", "HIGH", etc. last_updated DATETIME -- no timezone, no SCD tracking );
mara_data, vbrk_vbrp_joined, additional ad-hoc tables
mara_data (SAP material replica)
CREATE TABLE mara_data ( MATNR VARCHAR(18) PRIMARY KEY, -- SAP material number, not UUID/SKU MAKTX VARCHAR(40), -- description in SAP, not "product_name" MTART VARCHAR(4), -- material type code, no ENUM MATKL VARCHAR(9) -- material group, maps to "category" loosely );
vbrk_vbrp_joined (SAP billing replica)
CREATE TABLE vbrk_vbrp_joined ( VBELN VARCHAR(10), -- billing document number POSNR VARCHAR(6), -- line item KUNAG VARCHAR(10), -- sold-to customer (SAP) MATNR VARCHAR(18), -- material, not "product_id" FKIMG DECIMAL(13,3), -- quantity NETWR DECIMAL(15,2), -- net value per SAP (includes some deductions) WAERK CHAR(5) -- currency );
Also in production: customer_export_final_FINAL, product_catalog_export, item_master, pos_transactions, ecom_orders, rpt_revenue_daily, mktg_net_sales_cube, ops_sales_summary, ds_features_alice, ml_features_v3_bob, training_data_churn_v2_FINAL, alice_train_set_backup. Total: 20+ tables for concepts that Scenario 1 covers with 8 governed tables.
4 Glossary-to-Model Alignment Flow
In Scenario 2, the flow from glossary to PDM is broken at every step. Names diverge, definitions conflict, and physical tables cannot be traced back to glossary terms.
Broken Flow: "Customer"
Business Glossary
Customer
"A person or org that has purchased from ShaDey Inc."
name change
CDM
Account
SAP-derived name, different from glossary
abbreviated
LDM
cust
5 attrs, SAP field names, no rules
fragmented
PDM
kna1_extract
cust_data_v2
customer_export_final_FINAL
Broken Flow: "Net Sales"
Business Glossary
Net Sales
"Gross sales − returns − discounts − tax"
not modeled
CDM
Not modeled
No derived metric concept
no formula
LDM
Not defined
Each team writes its own SQL
3 versions
PDM
rpt_revenue_daily
mktg_net_sales_cube
ops_sales_summary
When naming diverges at CDM and definitions fragment at LDM, the PDM becomes a collection of ad-hoc tables that nobody fully understands. Impact analysis is impossible; changing one definition could break any of 20+ tables, and nobody knows which ones. Leadership meetings devolve into "which number is right?" arguments.
5 Term Deep Dives: Broken Traceability
Tracing 8 key terms through every layer. Red indicates misalignment; amber indicates partial alignment. Compare with Scenario 1 where every row is green.
Glossary Term CDM Entity LDM Entity / Attribute PDM Table(s) Status Root Cause
Customer Account (wrong name) cust, abbreviated, 5 attrs kna1_extract, cust_data_v2, customer_export_final_FINAL Broken SAP-derived CDM, no naming standard
Active Customer Not modeled cust.active_yn, no rule 3 tables, 3 definitions (6mo / 12mo / 90d) Broken No enterprise standard definition
Product Material (SAP name) mat, 4 SAP attrs mara_data, product_catalog_export, item_master Broken SAP naming, multiple systems
Net Sales Not modeled Not defined; ad-hoc SQL per team rpt_revenue_daily, mktg_net_sales_cube, ops_sales_summary Broken 3 conflicting formulas in production
Inventory On Hand StockPosition (close) stk_pos, mixes stock types mard_extract, wms_inventory_live Partial Semantic mismatch: includes reserved
Supplier Vendor (SAP name) vndr, 4 SAP attrs lfa1_extract Broken SAP naming at every layer
Order / Return SalesDocument (mixed) sd_doc, orders + returns + quotes vbak_vbap_joined, must filter by doc_type Broken 3 glossary terms collapsed into 1 entity
Feature Store / Training Not in CDM Not in LDM Personal schemas: ds_features_alice, ml_features_v3_bob Broken CDM predates AI/ML, no governance
In Scenario 2, no column in the PDM can be reliably traced back to a glossary term. Impact analysis requires manual detective work across 20+ tables. A schema change in kna1_extract could break reports, ML features, and downstream exports, and nobody knows the full blast radius until something fails in production.
6 Business Impact
How misaligned governance and an inconsistent glossary damage every aspect of data operations at ShaDey Inc.
Analytics & Reporting
  • "Net Sales" shows 3 different numbers across Finance, Marketing, and Ops dashboards
  • Leadership spends 40% of data review meetings debating which number is correct
  • Monthly reconciliation takes 2–3 analyst-days per cycle
Trust & Confidence
  • Business users do not trust the data; they maintain shadow spreadsheets
  • "Which number is right?" is the most common question in leadership meetings
  • New analysts spend 3–4 weeks just learning which tables to trust
AI/ML Failure Risk
  • Features built from ad-hoc tables contain definition drift; "active customer" means 3 things
  • Training data is not reproducible; retraining produces different results
  • PII leakage risk: no governance on personal-schema feature tables
Governance & Compliance
  • GDPR audit: cannot prove where customer PII resides across 20+ tables
  • SOX compliance: Net Sales formula is not standardized for financial reporting
  • Data steward position vacant; no enforcement of glossary definitions
Interoperability
  • Cross-domain queries fail because "Customer" is KUNNR in one table and cust_num in another
  • Joining SAP tables to analytics tables requires manual key mapping per query
  • API contracts use different entity names than the database
Operational Cost
  • Estimated $1.2M/year in reconciliation, rework, and duplicate pipeline maintenance
  • New data products take 3–6 months instead of weeks due to "data archaeology"
  • 20+ tables to maintain vs. 8 governed tables in Scenario 1
7 Key Takeaways
ShaDey Inc. has a glossary, but it is not enforced. When CDM entities use SAP names ("Account", "Material", "Vendor") instead of glossary terms ("Customer", "Product", "Supplier"), the glossary becomes documentation that nobody reads.
"Customer" → "Account" → "cust" → "kna1_extract". At each layer, the name drifts further from the business term. By PDM, a new analyst cannot tell which table represents which glossary concept without tribal knowledge.
When "Active Customer" has 3 definitions and "Net Sales" has 3 formulas, every ML feature that depends on these concepts inherits silent inconsistency. The model does not know which definition it was trained on, and neither does the team.
The gap between Scenario 1 and Scenario 2 is not theoretical. It manifests as: 3x more tables to maintain, monthly reconciliation cycles, leadership trust erosion, compliance audit failures, and 3–6 month delays on every new data product.

See how this should work: Scenario 1: Aligned Governance