# Blockchain for DATA TRUST in ENTERPRISE DATA LAKE ENGINEERING world

Businesses & Regulatory compliance (e.g., GDPR) often need a system-of-record application with

* **(a) Auditing capability** to keep track of critical data,
    
* **(b) establish Data provenance**,
    
* **(c) Verifiability** in order to evolve it to the maturity of **TRUSTED SOR or Systems-of-engagement (DWH/ Data lake)**.
    

We all know, *building TRUST (audit functionality & Verifiability)* with **Next Gen Distributed Relational databases/NOSQL Distributed Databases**

* requires **custom development**,
    
* is **time-consuming**,
    
* prone to human error,
    
* as in case of relational databases/ NOSQL DBs are not inherently *immutable*, any **unintended changes** to the data are hard to track and verify. **verifiability** is tougher implementation ask.
    

*BLOCKCHAIN NETWORK IS THE SILVER BULLET FOR SUCH SCENARIO IN DATA ENGINEERING AND DATA LAKE TRUST.*.

**"Blockchain" vis-a-vis "Today’s Systems-of-Record"**: {A VERY IMP PERSPECTIVE for **ENTERPRISE DATA PROCESSING & DATA LAKE ARCHITECTS**}

```plaintext
"Today’s Systems-of-Record" is a
 - *'Distributed Database/ Ledger Management system'* 
 - wherein all the members of a **business network** transact with each other, 
 - but they maintain **separate records of their transactions**.
 			
 	
-Whereas "Blockchain" is the Future network which answers aforemention inherent challenges with traditional SOR 
 - with *'Distributed' & 'Decentralized' Database/ Ledger Management system* 
 - wherein auditing, record keeping and **Data provenance** comes baked in
```

### SOR vs Blockchain from **Business Network** standpoint:

* Today’s Systems-of-Record" (Distributed Database or Ledger)
    
* Private programs & private Ledger for Every participant
    

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1627223809102/CyWYmKLfn.png align="left")

* "Blockchain" (The Future network of Distributed and Decentralized Database or Ledger)
    
* Shared programs and shared ledgers for Every participant
    

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1627223853598/KmmJL-odL.png align="left")

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