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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Deployment & Planning | 19% | - Replication Strategies - High Availability Architecture - Database Clustering - Capacity Planning - Disaster Recovery Planning - Database Server Requirements |
| Topic 2: Database Implementation | 22% | - Data Types and Constraints - Data Import/Export - Database Objects (Tables, Views, Indexes) - SQL DDL Statements - Triggers - Stored Procedures and Functions |
| Topic 3: Database Fundamentals | 20% | - ACID Properties - Data Models (Relational, NoSQL, etc.) - CAP Theorem - Database Design Principles - Data Normalization - Database Concepts and Architecture |
| Topic 4: Data Analytics & Engineering | 19% | - Data Visualization Basics - ETL Processes - Reporting Concepts - Data Quality - Data Warehousing Concepts - Data Governance |
| Topic 5: Database Support, Maintenance & Optimization | 20% | - Patch Management - Backup and Recovery Procedures - Performance Monitoring - Query Optimization - Index Management - Database Security (Users, Roles, Permissions) |
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NEW QUESTION # 41
A business analyst queries the same few tables every quarter and does not want to write new SQL code every time. Which of the following would best support the business analyst's needs and allow the database administrator to optimize disk space?
Answer: A
NEW QUESTION # 42
A database administrator wants to remove inactive customers from a database. Which of the following statements should the administrator use?
Answer: B
Explanation:
The statement that the administrator should use to remove inactive customers from a database is option A. This statement uses the DELETE command to delete all the rows from the customer table where the status column is equal to 'inactive'. The other options either have syntax errors, use incorrect commands, or do not specify the condition correctly. Reference: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.2 Given a scenario, execute database tasks using scripting and programming languages.
NEW QUESTION # 43
Which of the following services is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network?
Answer: B
Explanation:
The service that is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network is DHCP. DHCP, or Dynamic Host Configuration Protocol, is a service that automatically assigns IP addresses and other network configuration parameters, such as subnet mask, default gateway, DNS server, etc., to computers or devices on a network. DHCP helps simplify the administration and management of IP addresses on a network, as well as avoid conflicts or errors caused by manual or duplicate assignments. DHCP also allows computers or devices to release or renew their IP addresses when they join or leave the network. The other options are either different services or not related to IP addresses at all. For example, DNS, or Domain Name System, is a service that translates domain names into IP addresses and vice versa; LDAP, or Lightweight Directory Access Protocol, is a service that provides access to directory information such as users, groups, or devices on a network; ISMTP is not a valid acronym or service.
NEW QUESTION # 44
A new retail store employee needs to be able to authenticate to a database. Which of the following commands should a database administrator use for this task?
Answer: A
Explanation:
The command that the database administrator should use for this task is CREATE USER. The CREATE USER command is a SQL statement that creates a new user account in a database and assigns it a username and a password. The CREATE USER command also allows the database administrator to specify other options or attributes for the user account, such as default tablespace, quota, profile, role, etc. The CREATE USER command is the first step to enable a user to authenticate to a database. The other options are either invalid or not suitable for this task. For example, INSERT USER is not a valid SQL command; ALLOW USER is not a SQL command, but a keyword used in some database systems to grant permissions to users; ALTER USER is a SQL command that modifies an existing user account, but does not create a new one. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.2 Given a scenario, implement security controls for databases.
NEW QUESTION # 45
Which of the following is the best to consult in order to start the recovery process after a disaster?
Answer: C
Explanation:
Transaction logs record all database changes and are essential for restoring data to a consistent state during the recovery process after a disaster.
NEW QUESTION # 46
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