Daedalus Wallet
Daedalus Wallet: a full-node Cardano wallet that stores encrypted keys locally, with hardware wallet integration and official website download guide.
Daedalus Wallet: a full-node Cardano wallet that stores encrypted keys locally, with hardware wallet integration and official website download guide.
Database sharding partitions a large database into shards for horizontal scaling and faster queries, covering shard keys, strategies and architecture.
Data caching is a process that involves storing copies of data in a temporary storage location, or cache, to enable faster access and retrieval.
Data consistency models define read/write rules in distributed systems, balancing strong and eventual guarantees against performance trade-offs.
Data partitioning is dividing large datasets into smaller segments to boost query performance, enable horizontal scaling, and optimize resources.
Data persistence layer: a software abstraction that handles CRUD to store and retrieve domain entities in databases, ensuring integrity and consistency.
Data privacy is the control and protection of personal data - how it's collected, used, and shared - guided by laws like GDPR and CCPA.
Data redundancy is the same data stored in multiple locations—by design or mistake—affecting storage costs, consistency, performance, and availability.
Data replication strategies are methods for fast data replication across systems, boosting availability, consistency, performance, and disaster recovery.
Data scraping, or web scraping, is the automated extraction of website data for market research and competitor analysis, with legal and ethical guidance.
Data validation for trading ensures data is accurate, consistent, and rule-compliant before use, preventing errors and supporting decisions.
Dead cat bounce: a brief rebound after a steep drop that soon continues lower. Examples in stocks and crypto plus tips to identify the pattern.
Dealer networks are interconnected dealers that trade bonds and other securities in financial markets, providing liquidity and lowering search frictions.
Death cross definition: when the 50-day SMA crosses below the 200-day SMA, a bearish signal watched in crypto and stocks, with notes on false signals.
Decentralized database: a distributed system storing data across multiple nodes to boost security, fault tolerance, scalability, and global availability.
Decentralized identity (DID) is a self-sovereign model where users control IDs via blockchain and verifiable credentials, improving privacy and security.
A decentralized network distributes control across many nodes, avoiding single points of failure and improving security, reliability, and scalability.
Decentralized order book: a peer-to-peer ledger of buy and sell orders on a distributed network, matched by smart contracts without a central exchange.
Decentralized risk management means distributing risk decisions across organizational levels to identify, assess and mitigate risks faster.
Decentralized social media is a user-controlled network built on decentralized protocols, prioritizing data ownership, privacy, and censorship resistance.
Decryption is converting encrypted data back to readable plaintext using a key, enabling confidentiality, integrity checks, and secure access.
Deep web: the part of the internet not indexed by search engines, including private databases and paywalled content; distinct from the dark web.
Deflation is a sustained fall in the general price level, increasing money's real value. Explore causes, CPI measurement, effects, and policy tools.
Delisting is the removal of a company's stock from a stock exchange, voluntary or involuntary, covering reasons, the process, and investor implications.
Demurrage is a fee charged on holding currency, designed to discourage hoarding and encourage spending. Learn how demurrage works in finance and crypto systems.
Dencun Upgrade: an Ethereum hard fork merging Cancun and Deneb changes, including EIP-4844, to add blob transactions, lower fees, and improve scalability.
DePIN is Decentralized Physical Infrastructure Networks: blockchain-based systems for data storage, broadband, and energy, with token incentives.
Dex aggregator: a service that pools liquidity across DEXs to secure best swap prices, reduce slippage and gas, and route trades across networks like BSC.
Diamond hands: steadfastly holding investments through volatility without selling. Explore origins, psychology, risks and rewards in stocks and crypto.
A digital dollar is a proposed Federal Reserve CBDC—an electronic US dollar for faster, cheaper payments and inclusion, with privacy and legal risks.
Digital identity is data that uniquely identifies a person or entity online, enabling authentication and access. Covers DIDs, credentials and blockchain.
A dip in crypto is a short-term price decline within an uptrend, often temporary, and distinct from a correction or bear market.
Direct debit is a payment method where a payee withdraws funds from an account for recurring bills, protected by the UK Direct Debit Guarantee.
Direct transfers refer to the process of moving funds or assets directly from one party to another without intermediaries.
Disaster recovery is restoring critical systems and data after disruption, defining RPO/RTO, procedures, and backups to maintain business continuity.
A dispute is a disagreement between parties over rights or obligations. Includes common types and steps to resolve financial, legal, and workplace issues.
Distributed computing is a model where networked computers (nodes) share tasks and resources to process data and solve problems more efficiently.
Distributed consensus is how distributed systems agree on a single value or state across nodes despite failures, via Paxos, Raft, and PBFT.
Distributed ledger: a decentralized system that records and validates transactions across nodes without a central authority, creating immutable data.
Distributed ledger technology (DLT) is a decentralized system that records and validates transactions across multiple nodes for security and transparency.
A distributed network is an architecture where many nodes share workloads without a single point of failure, boosting fault tolerance and scalability.
A distributed order book is a decentralized system for recording and managing buy and sell orders for assets, typically used in financial markets.
Dorian Nakamoto is a Japanese-American engineer mistakenly identified by Newsweek in 2014 as Bitcoin creator Satoshi Nakamoto; he denies it.
Double spending is spending the same digital currency twice; blockchain consensus, PoW and PoS, and public ledgers prevent double spending attacks.
DRC-20 is a token standard on the Dogecoin blockchain, enabling the creation and management of fungible tokens with specific rules and functionalities.
Drivechain is a Bitcoin proposal enabling sidechains via blind merge mining and hashrate escrow, adding features and scale without changing mainchain.
Dumping crypto is a coordinated sell-off in pump-and-dump schemes that inflates then crashes token prices, with red flags, phases, and ways to avoid scams
Dynamic Currency Conversion (DCC) lets cardholders pay in their home currency abroad, often with markups and fees. Understand costs and when to decline.
Dynamic fees are real-time price adjustments based on demand, supply, and market conditions, used from ride-share surge pricing to DeFi liquidity pools.
Dynamic pricing is a strategy where businesses adjust prices in real time based on demand, competitor moves, and market data to boost revenue.
A single gateway to liquidity with competitive prices, fast settlements, and lightning-fast issue resolution
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