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WGU D426 (v2) Revised exam Questions with 100% Correct Answers | Verified | Updated 2024
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WGU D426 (v2) Revised exam Questions with 100% Correct Answers | Verified | Updated 2024
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WGU D426 (v2) Revised exam Questionswith 100% Correct Answers | Verified | Updated 2024
The relationship that describes how one attribute's value can determine another's - Correct Answer-Functional Dependency
An attribute determining the value of another attribute - Correct Answer-Determinant
Unique and minimal attribute determining non-key attributes - Correct Answer-
Candidate Key
Defines and manages database structures - Correct Answer-DDL
Manipulates data: adding, deleting, modifying - Correct Answer-DML
Manages user accounts and permissions - Correct Answer-DCL
Commands: CREATE, DROP, ALTER, TRUNCATE, RENAME - Correct Answer-DDL
Stored view that updates when underlying data changes - Correct Answer-Materialized View
Computed view not stored in memory - Correct Answer-Virtual View
Information describing data elements - Correct Answer-Metadata
Ordered collection of elements in parentheses - Correct Answer-Tuple
Percentage of table rows a query selects - Correct Answer-Hit Ratio
Directly reads blocks without using an index - Correct Answer-Table Scan
Reads index blocks to locate table blocks - Correct Answer-Index Scan
Database splits the index until a match is found - Correct Answer-Binary Search
Database object mapping tables to a file - Correct Answer-Tablespace
Specifies tables and keys, also called a schema - Correct Answer-Logical Design
Specifies how tables are stored on media - Correct Answer-Physical Design Components and relationships in a computer system - Correct Answer-Architecture
Direct interface with database users, includes APIs - Correct Answer-Tools
Interprets and compiles queries - Correct Answer-Query Processor
Link between tools and query processor - Correct Answer-Connection
Manages communication between tools and query parser - Correct Answer-Connection Manager
Translates query instructions to file system commands - Correct Answer-Storage Engine
Accesses data on storage media, includes logs and user data - Correct Answer-File System
Stores reusable information in memory - Correct Answer-Cache Manager
Retains file system data blocks for reuse - Correct Answer-Buffer Manager
Hierarchical arrangement - Correct Answer-Multi-tier architecture
Multi-tier with web browsers and servers over the internet - Correct Answer-Web architecture
Software emulating a complete computing environment - Correct Answer-Virtual Machine
Database offered as a cloud service - Correct Answer-Cloud Database
Statement from which another is inferred - Correct Answer-Premise
A system with multiple processors that can run multiple tasks simultaneously. They can be configured to have shared memory, shared storage, or neither - Correct Answer-
Parallel Computer
Any device, such as a computer or printer, connected to a network - Correct Answer-
Node
Group of nodes on a LAN with separate OS instances - Correct Answer-Cluster
Database on a parallel computer or cluster - Correct Answer-Parallel Database
Database on multiple computers connected by a WAN - Correct Answer-Distributed Database
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