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CompTIA DS0-001 Exam Syllabus Topics:

Section	Weight	Objectives
Database Deployment	16%	- Implementation and testing 1. Version control and deployment validation 2. Stress and regression testing 3. Schema validation 4. Connectivity testing - Planning and design 1. ERDs and data dictionaries 2. Requirements gathering 3. Database architecture design
Database Fundamentals	24%	- Scripting and programming 1. Python, PowerShell, CLI tools 2. Server-side vs client-side scripting - Database structure types 1. Relational vs non-relational databases 2. NoSQL types (document, key-value, column, graph) 3. Common systems (e.g., MongoDB, DynamoDB, Cassandra, Neo4j) - SQL development 1. Stored procedures and views 2. ACID properties 3. DDL, DML, TCL
Database Management and Maintenance	25%	- Maintenance tasks 1. Replication and backup management 2. Optimization and indexing concepts 3. Job scheduling and failure monitoring - Monitoring and reporting 1. Performance baselines and trending 2. CPU, memory, disk usage monitoring 3. Alerts and notifications
Data and Database Security	23%	- Security controls 1. Authentication and authorization 2. Access control and role management - Protection mechanisms 1. Governance and compliance 2. Encryption and data protection 3. Attack prevention and mitigation
Business Continuity	12%	- Continuity planning 1. Fault tolerance and redundancy 2. High availability systems - Disaster recovery 1. Backup and restore strategies 2. Incident recovery procedures

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CompTIA DataSys+ Certification Exam Sample Questions (Q110-Q115):

NEW QUESTION # 110
Which of the following is a best practice during the backup process?

A. Following documentation policies during backup
B. Performing backups as requested
C. Using the same disk for backups
D. Overlapping backup sessions

Answer: A

Explanation:
Adhering to documentation policies ensures that backups are performed consistently, accurately, and can be traced or restored correctly when needed, which is a best practice in database management.

NEW QUESTION # 111
A database administrator wants to create a database that does not have a predefined schema.
Which of the following tools should the administrator use to create this type of database?
(Choose two.)

A. SQL Server
B. MariaDB
C. PostgreSQL
D. MySQL
E. MongoDB
F. Cosmos

Answer: E,F

NEW QUESTION # 112
Over the weekend, a company's transaction database was moved to an upgraded server. All validations performed after the migration indicated that the database was functioning as expected. However, on Monday morning, multiple users reported that the corporate reporting application was not working.
Which of the following are the most likely causes? (Choose two.)

A. The database server is not permitted to fulfill requests from a reporting application.
B. The access permissions for the service account used by the reporting application were not changed.
C. The new database server has its own reporting system, so the old one is not needed.
D. The reporting application cannot keep up with the new, faster response from the database.
E. The reporting jobs that could not process during the database migration have locked the application.
F. The reporting application's mapping to the database location was not updated.

Answer: B,F

Explanation:
The most likely causes of the reporting application not working are that the access permissions for the service account used by the reporting application were not changed, and that the reporting application's mapping to the database location was not updated. These two factors could prevent the reporting application from accessing the new database server. The other options are either irrelevant or unlikely to cause the problem. References: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.2 Given a scenario, troubleshoot common database issues.

NEW QUESTION # 113
Which of the following have data manipulation and procedural scripting power? (Choose two.)

A. MySQL
B. Advanced SQL
C. PQL
D. T-SQL
E. PL/SQL
F. SQL

Answer: D,E

Explanation:
The two options that have data manipulation and procedural scripting power are PL/SQL and T- SQL. PL/SQL, or Procedural Language/Structured Query Language, is an extension of SQL that adds procedural features to SQL for Oracle databases. PL/SQL allows users to create and execute stored procedures, functions, triggers, packages, etc., using variables, loops, conditions, exceptions, etc., in addition to SQL commands. PL/SQL helps improve the performance, functionality, modularity, and security of SQL queries and applications. T-SQL, or Transact-SQL, is an extension of SQL that adds procedural features to SQL for Microsoft SQL Server databases.
T-SQL allows users to create and execute stored procedures, functions, triggers, etc., using variables, loops, conditions, exceptions, etc., in addition to SQL commands. T-SQL helps improve the performance, functionality, modularity, and security of SQL queries and applications. The other options are either not related or not having both data manipulation and procedural scripting power. For example, PQL, or Power Query Language, is a data analysis and transformation language for Microsoft Power BI and Excel; Advanced SQL is a term that refers to the advanced features or techniques of SQL, such as subqueries, joins, aggregations, etc.; SQL, or Structured Query Language, is a standard language for manipulating and querying data in relational databases, but it does not have procedural features.

NEW QUESTION # 114
Which of the following indexes stores records in a tabular format?

A. Secondary
B. Unique
C. Non-clustered
D. Columnstore

Answer: D

Explanation:
The index that stores records in a tabular format is columnstore. A columnstore index is a type of index that stores and compresses data by columns rather than by rows. A columnstore index can improve the performance and efficiency of queries that perform aggregations, calculations, or analysis on large amounts of data, such as data warehouse or business intelligence applications. A columnstore index can also reduce the storage space required for data by applying various compression techniques, such as dictionary encoding, run-length encoding, bit packing, etc. The other options are either different types of indexes or not related to indexes at all. For example, a non-clustered index is a type of index that stores the values of one or more columns in a sorted order along with pointers to the corresponding rows in the table; a unique index is a type of index that enforces uniqueness on one or more columns in a table; a secondary index is an alternative term for a non-clustered index. Reference: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.1 Given a scenario, perform common database maintenance tasks.

NEW QUESTION # 115
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