Podcast
Questions and Answers
What creates, reads, updates, and deletes data in a database while controlling access and security?
What creates, reads, updates, and deletes data in a database while controlling access and security?
Database management system
Real-time __________ provide real-time data in response to requests.
Real-time __________ provide real-time data in response to requests.
data
What does the warehouse database model do?
What does the warehouse database model do?
What are relational integrity constraints?
What are relational integrity constraints?
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What is data gap analysis?
What is data gap analysis?
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What is data stewardship?
What is data stewardship?
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What are business-critical integrity constraints?
What are business-critical integrity constraints?
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What is a data steward responsible for?
What is a data steward responsible for?
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What does query-by-example do?
What does query-by-example do?
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What are the four functions that a database management system can perform on data in a database?
What are the four functions that a database management system can perform on data in a database?
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What is a real-time system?
What is a real-time system?
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What is a relational database model?
What is a relational database model?
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What is metadata?
What is metadata?
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What does the physical view of data deal with?
What does the physical view of data deal with?
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What is the logical view of data?
What is the logical view of data?
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What does data integrity measure?
What does data integrity measure?
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What is a business rule?
What is a business rule?
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What is data inconsistency?
What is data inconsistency?
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What are data integrity issues?
What are data integrity issues?
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What does a database maintain?
What does a database maintain?
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What is a data field?
What is a data field?
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What is a data dictionary?
What is a data dictionary?
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What is data granularity?
What is data granularity?
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What is data latency?
What is data latency?
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What is data redundancy?
What is data redundancy?
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What does a data governance system do?
What does a data governance system do?
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What are integrity constraints?
What are integrity constraints?
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What are relational integrity constraints?
What are relational integrity constraints?
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What is data aggregation?
What is data aggregation?
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What is a data cube?
What is a data cube?
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What are data quality audits?
What are data quality audits?
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What are infographics?
What are infographics?
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What is a data artist?
What is a data artist?
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What is distributed computing?
What is distributed computing?
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What is a ledger?
What is a ledger?
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What is a dataset?
What is a dataset?
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What does ETL stand for?
What does ETL stand for?
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What is a data warehouse?
What is a data warehouse?
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What is a data mart?
What is a data mart?
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What is a data lake?
What is a data lake?
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What is dirty data?
What is dirty data?
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What is data cleansing?
What is data cleansing?
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What is analysis paralysis?
What is analysis paralysis?
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What is blockchain?
What is blockchain?
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What is proof-of-work?
What is proof-of-work?
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What is bitcoin?
What is bitcoin?
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What is source data?
What is source data?
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What is a dataset?
What is a dataset?
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What is bluetooth?
What is bluetooth?
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What is WiMAX?
What is WiMAX?
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What is a wireless MAN?
What is a wireless MAN?
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What does an SSL certificate do?
What does an SSL certificate do?
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What is a bit?
What is a bit?
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What is an access point?
What is an access point?
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What does a wireless access point do?
What does a wireless access point do?
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What is SSL?
What is SSL?
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What is WWAN?
What is WWAN?
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What is a Wireless MAN?
What is a Wireless MAN?
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What does Secure Sockets Layer (SSL) do?
What does Secure Sockets Layer (SSL) do?
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What does HTTPS SHTTP represent?
What does HTTPS SHTTP represent?
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What is a Wide Area Network (WAN)?
What is a Wide Area Network (WAN)?
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What does bandwidth measure?
What does bandwidth measure?
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What is bit rate?
What is bit rate?
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What is a PAN?
What is a PAN?
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What is a LAN?
What is a LAN?
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What do WAPs with MIMO do?
What do WAPs with MIMO do?
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What are hotspots?
What are hotspots?
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What do smartphones offer compared to basic cell phones?
What do smartphones offer compared to basic cell phones?
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What is streaming?
What is streaming?
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What does Voice over IP use?
What does Voice over IP use?
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What is war driving?
What is war driving?
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What is wireless WAN?
What is wireless WAN?
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What provides communication for devices owned by a single user over a short distance?
What provides communication for devices owned by a single user over a short distance?
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Study Notes
Database Management
- A database management system (DBMS) enables creation, reading, updating, and deletion of data while controlling security and access.
- Functions of a DBMS include creating data, deleting data, reading data, and updating data.
Data Models
- Relational database model organizes data in logically related two-dimensional tables.
- Warehouse database model also stores data in related two-dimensional tables but is focused on business analysis.
- Data cube represents multidimensional data for easier analysis.
Data Integrity and Governance
- Integrity constraints ensure the quality of data by enforcing business rules.
- Relational integrity constraints address basic information-based rules, whereas business-critical integrity constraints require deeper insights for compliance.
- Data stewardship involves overseeing data assets to maintain quality and accessibility for business users.
- A data steward acts as a liaison between management information systems and business requirements.
Data Analysis and Management
- Data gap analysis identifies gaps in data to ensure it meets business expectations.
- Data aggregation collects data from multiple sources for processing.
- Data latency refers to the time required for data storage or retrieval.
- Data cleansing (scrubbing) eliminates incorrect or incomplete data.
Data Quality and Consistency
- Data integrity is a measure of data's quality. Issues arise when data is incorrect, inconsistent, or duplicated.
- Data inconsistency occurs when the same data element has different values.
- Conducting data quality audits helps assess the accuracy and completeness of data.
Digital Technologies
- Blockchain is a distributed ledger technology of interconnected blocks that are timestamped and linked, ensuring transparency and security.
- Proof-of-work is a computational task required for creating new transactions in blockchain.
- Bitcoin is a digital currency that operates independently from central banks while maintaining transaction records using computational solutions.
Networking and Connectivity
- Wireless PAN provides short-distance communication for devices owned by individual users.
- Wireless LAN uses radio signals for data transmission over limited distances.
- WiMAX and Wireless MAN technologies offer high-speed wireless communication over wider areas.
- Hotspots allow public Wi-Fi access at designated locations.
- Voice over IP (VoIP) utilizes internet technology for phone calls.
Data and Technology Terms
- Metadata offers information about data characteristics.
- Data dictionary collects metadata about data elements.
- Data field is synonymous with data element, serving as the smallest data unit.
- Dirty data refers to erroneous or flawed information.
- Bit is the smallest data element, representing either a 0 or a 1.
- Bandwidth measures network capacity, representing maximum data transfer capability.
General Concepts
- Streaming allows audio and video files to be viewed while being transferred.
- Analysis paralysis occurs when excessive analysis prevents decision-making.
- Data mart is a subset of a data warehouse, focused on specific business areas.
These notes encompass critical elements of database management, data integrity, digital technologies, networking, and related terminologies for effective study and understanding.
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Test your knowledge on database management concepts with these flashcards. This quiz covers key definitions and terms related to databases, including data management systems and warehouse database models. Perfect for reinforcing your understanding of database structures and operations.