Blockchain for the DBA and Data Professional
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An overview of blockchain fundamentals, including examples of Oracle 20c Blockchain Tables. Includes concepts of trust, immutability, hashes, distributed nodes, and cryptography.
![ORACLE BLOCKCHAIN TABLE
NO DROP
NO DROP UNTIL n DAYS IDLE
NO DELETE
NO DELETE UNTIL n DAYS AFTER INSERT [LOCKED]
DBMS_BLOCKCHAIN_TABLE.VERIFY_ROWS](https://image.slidesharecdn.com/blockchainforthedbaanddataprofessional-200508142442/85/Blockchain-for-the-DBA-and-Data-Professional-23-320.jpg)
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Blockchain for the DBA and Data Professional
- 1. Level: Intermediate Karen Lopez Data Evangelist, InfoAdvisors @DataChick Blockchain for the DBA and Data Professional BASICS OF BLOCKCHAIN
- 2. Karen Lopez • Karen has 20+ years of data and information architecture experience on large, multi-project programs. • She is a frequent speaker on data modeling, data- driven methodologies and pattern data models. • She wants you to love your data.
- 3. ABSTRACT With all the hype around blockchain, why should a data architect or other data professional care? In this session, we will cover the basics of blockchain as it applies to data and database processes: Immutability Verification Distribution Cryptography Transactions Trust We will look at current offerings for blockchain features in Azure and in database and data stores. Finally, we'll help you identify the types of business requirements that need blockchain technologies. You will learn: Understand the valid uses of blockchain approaches in databases How current technologies support blockchain approaches Understand the costs, benefits, and risks of blockchain Blockchain for the DBA and Data professional: Basics of Blockchain
- 4. WHY THIS TOPIC? I was asked to give a primer on Blockchain Buzz More focus on data uses Better understanding of uses I own a blockchain skirt
- 5. WHY DBAS AND DATA PROFESSIONALS Concepts Business implementations Database technologies
- 6. DO YOU BLOCKCHAIN? Use it personally? Involved in professional use? Rich from your bitcoin?
- 7. BLOCKCHAIN BASICS A NO FLUFF REVIEW
- 8. BLOCKCHAIN BACKGROUND TECH DEVELOPED BY AN ANONYMOUS PERSON ORIGINALLY FOR COIN LOTS OF BUZZ LOTS OF WORDS LOTS OF HATE LOTS OF GOOD USES
- 9. BLOCKCHAIN FUNDAMENTALS TIMESTAMPED TRANSACTIONS IMMUTABILITY DISTRIBUTED, MULTIPLY- OWNED NODES EACH NODE HAS BLOCKS CHAINED TO OTHERS CRYPTOGRAPHIC HASHES
- 10. TRANSACTIONS “It’s basically the same thing as a database transaction” Not changeable Must be offset with another transaction Consensus is reached when 51% of the nodes agree transaction is valid Recorded in all nodes
- 11. NODES Distributed Ledgers Transactions are recorded in all nodes. Instead of one ledger, there are many ledgers to maintain trust Nodes are: Distributed, multiply-owned nodes Based on P2P architectures No central owner or manager: Consensus-based
- 12. BLOCK One transaction of data Data about transaction #1 {data} #2 {data} #1 #3 {data} #2 Hash of data Hash from previous block
- 13. ADD BLOCK PROCESS Here’s a Transaction1 Send Transaction to all nodes2 Validate Transaction3 Add to blockchain4 … Nodes
- 14. TRUST To manipulate the data, one would need to change all (or 51%) the copies of the data, which are managed by different people. …and do so at exactly the same time
- 15. HISTORY – THE CHAIN Everyone sees Where the asset was previously in the chain When some transaction about the asset was done Every previous state of an asset in the chain
- 16. TRUST EVERYONE, BUT ALWAYS CUT THE DECK Blockchain does not validate the truthfulness of the transaction that is put into the chain
- 17. TRIGGERS An action that happens after a transaction Delivery Penalty Payment …anything
- 18. LEDGERS Traditional Each org has own ledger Managed by one entity Audited Requires constant reconciliation Sometimes not secure May be encrypted Blockchain Multiple copies Managed by multiple entities Transparent Trustable Encrypted
- 20. NATIVE BLOCKCHAIN TABLES Oracle Blockchain Tables Focuses on Tamper Resistance Insert only Not distributed Not visible to others Still centralized management Features PKI signatures: impersonation resistance Encryption Trust but Verify: copies hashes and data to an external data store Performance: no consensus required, no extra infrastructure CREATE Blockchain Table Trade_Ledger;
- 21. ORACLE BLOCKCHAIN TABLE Transaction of data in a Blockchain Table as a row Data about transaction in Blockchain Table as columns #1 {data} #0 #2 {data} #1 #3 {data} #2 Hash of data Hash from previous block Audit Log of hashes and PKI Signatures
- 23. ORACLE BLOCKCHAIN TABLE NO DROP NO DROP UNTIL n DAYS IDLE NO DELETE NO DELETE UNTIL n DAYS AFTER INSERT [LOCKED] DBMS_BLOCKCHAIN_TABLE.VERIFY_ROWS
- 24. ORACLE BLOCKCHAIN TABLE CREATE CREATE BLOCKCHAIN TABLE bctab_part (trans_id number primary key, sender varchar2(50), recipient varchar2(50), trans_date DATE, amount number) NO DROP UNTIL 16 DAYS IDLE NO DELETE UNTIL 25 DAYS AFTER INSERT HASHING USING "SHA2_512" VERSION "v1" PARTITION BY RANGE(trans_date) (PARTITION p1 VALUES LESS THAN (TO_DATE('30-09-2019','dd-mm-yyyy')), PARTITION p2 VALUES LESS THAN (TO_DATE('31-12-2019','dd-mm-yyyy')), PARTITION p3 VALUES LESS THAN (TO_DATE('31-03-2020','dd-mm-yyyy')), PARTITION p4 VALUES LESS THAN (TO_DATE('30-06-2020','dd-mm-yyyy')) );
- 25. RESTRICTIONS ORACLE BLOCKCHAIN TABLE Updating and merging rows Adding, dropping, and renaming columns Truncating the blockchain table Dropping partitions Defining BEFORE ROW triggers that fire for update operations (other triggers are allowed) Direct-path loading Inserting data using parallel DML Converting a regular table to a blockchain table or vice versa XA transactions https://docs.oracle.com/en/database/oracle/oracle-database/20/admin/managing-tables.html
- 26. WHY WOULD ONE USE A BLOCKCHAIN TABLE? More trustworthy More protection from DBA/SysAdmin tampering Don’t need or want full blockchain functionality
- 27. BENEFITS OF BLOCKCHAIN SHORTER PROCESSING TIMES LOWER COSTS LESS OF CERTAIN RISKS IT’S BUZZWORTHY
- 28. BLOCKCHAIN FLUFF
- 29. BLOCKCHAIN FLUFF “Blockchain is about Bitcoin and hiding illegal acts”
- 30. BLOCKCHAIN & COIN FLUFF “Blockchain is free, so it will put every business that charges a small fee out of business” Credit card merchants Banks Music labels Amazon Travel agencies Travel providers Stock exchanges ….
- 31. BLOCKCHAIN IRL
- 32. BLOCKCHAIN IN REAL LIFE Supply Chain Inventory Transportation Healthcare Utilities Financial
- 33. BLOCKCHAIN IN REAL LIFE Large Global Retailer’s Canadian operations Track deliveries Verify transactions Automate payments 500,000 loads of inventory 853 million cases of merchandise Significant cost savings Faster payments
- 34. 2019 STATS From IDC Total spending 2.9 billion on blockchain That’s an increase of 89% from 2018 Predicted to reach 12.4 billion by 2022
- 35. OTHER INTERESTING STATS Bitcoin miners are paid to provide consensus on transactions In 2017, miners used more energy that all of New Zealand In 2010 an early Bitcoin user bought two pizzas for 10,000 Bitcoin These are about Bitcoin, but they are interesting factiods
- 36. WHAT DOES THIS MEAN TO A DATA MODELER/ARCHITECT? Support for RDBMS new features are required in our data modeling tools Understanding when to use Blockchain and when to use traditional logging/accounting tables mandatory Understanding the difference between Ledger/Blockchain tables and traditional Blockchain services required
- 37. EVENT – RECOMMENDED FOR LOW-FLUFF Women on the Block www.womenontheblock.io
- 38. 39