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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Fundamentals | 20% | - Data Models (Relational, NoSQL, etc.) - Database Concepts and Architecture - CAP Theorem - Database Design Principles - Data Normalization - ACID Properties |
| Topic 2: Data Analytics & Engineering | 19% | - ETL Processes - Reporting Concepts - Data Governance - Data Visualization Basics - Data Quality - Data Warehousing Concepts |
| Topic 3: Database Implementation | 22% | - Triggers - Data Types and Constraints - Data Import/Export - Stored Procedures and Functions - Database Objects (Tables, Views, Indexes) - SQL DDL Statements |
| Topic 4: Database Deployment & Planning | 19% | - Replication Strategies - Disaster Recovery Planning - High Availability Architecture - Database Clustering - Database Server Requirements - Capacity Planning |
| Topic 5: Database Support, Maintenance & Optimization | 20% | - Backup and Recovery Procedures - Performance Monitoring - Database Security (Users, Roles, Permissions) - Query Optimization - Patch Management - Index Management |
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NEW QUESTION # 14
Following a security breach, a database administrator needs to ensure users cannot change data unless a request is approved by the management team. Which of the following principles addresses this issue?
Answer: B
Explanation:
The principle that addresses this issue is least privilege. Least privilege is a security principle that states that users should only have the minimum level of access or permissions required to perform their tasks or roles.
By applying this principle, the administrator can ensure that users cannot change data unless they have been authorized by the management team through a request approval process. This prevents unauthorized or accidental modifications of data that may compromise its integrity or security. The other options are either opposite or unrelated to this principle. For example, open access means that users have unrestricted access to data; least resistance means that users have the easiest or most convenient access to data; elevated privilege means that users have higher or more permissions than they need. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.1 Given a scenario, apply security principles and best practices for databases.
NEW QUESTION # 15
A database administrator would like to create a table named XYZ. Which of the following queries should the database administrator use to create the table?
Answer: C
Explanation:
The query that the administrator should use to create the table is option B. This query uses the CREATE TABLE statement to define a new table named XYZ with three columns: ID, Name, and Age. Each column has a data type and a constraint, such as NOT NULL, PRIMARY KEY, or CHECK. The other options either have syntax errors, use incorrect keywords, or do not specify the table name or columns correctly. Reference: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.1 Given a scenario, identify and apply database structure types.
NEW QUESTION # 16
Which of the following describes the purpose of a snapshot?
Answer: D
Explanation:
The purpose of a snapshot is to create an image of a database. A snapshot is a copy of the state and content of a database at a specific point in time. A snapshot can be used for various purposes, such as backup and recovery, testing and development, reporting and analysis, etc. A snapshot can be created using various techniques, such as full copy, incremental copy, differential copy, etc. A snapshot can also be created using various tools or commands provided by the database system or software. The other options are either incorrect or irrelevant for this question. For example, dynamic data replication is a process that copies and synchronizes data from one database server (the source) to one or more database servers (the target) in real time; a synonym is an alias or an alternative name for an object in a database; C is an incomplete option. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.2 Given a scenario, implement backup and restoration of database management systems.
NEW QUESTION # 17
Which of the following should be done before applying a patch to a database?
Answer: D
Explanation:
Creating backups before applying patches ensures that the database can be restored to its previous state if the patch causes issues, protecting data integrity and minimizing downtime.
NEW QUESTION # 18
A server administrator wants to analyze a database server's disk throughput. Which of the following should the administrator measure?
Answer: B
Explanation:
The factor that the administrator should measure to analyze a database server's disk throughput is IOPS.
IOPS, or Input/Output Operations Per Second, is a metric that measures the number of read and write operations that a disk can perform in one second. IOPS indicates the performance or speed of a disk and how well it can handle multiple requests or transactions. Higher IOPS means higher disk throughput and lower latency. IOPS can be affected by various factors, such as disk type, size, speed, cache, RAID level, etc. The other options are either not related or not sufficient for this purpose. For example, RPfvl is not a valid acronym or metric; latency is the time delay between a request and a response; reads are the number of read operations performed by a disk. References: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.2 Given a scenario, monitor database performance.
NEW QUESTION # 19
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