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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA DataSys+ Certification Exam |
| Exam Number: | DS0-001 |
| Exam Format: | Performance-based questions, Multiple-choice |
| Related Certifications: | CompTIA Security+ CompTIA Server+ CompTIA Data+ |
| Exam Price: | $390 USD (approximate; may vary by region) |
| Exam Duration: | 90 minutes |
| Passing Score: | 700 (on a scale of 100–900) |
| Real Exam Qty: | Up to 90 questions |
| Available Languages: | Japanese, English |
| Certificate Validity Period: | 3 years |
| Recommended Training: | CompTIA CertMaster Learn DataSys+ Official DataSys+ Study Guide (DS0-001) |
| Exam Registration: | Pearson VUE Exam Registration CompTIA Official Certification Page |
| Sample Questions: | CompTIA DS0-001 Sample Questions |
| Exam Way: | Online proctored or in-person testing via Pearson VUE authorized test centers |
| Pre Condition: | No formal prerequisites; 2–3 years of experience in database administration is recommended. |
| Official Syllabus URL: | https://www.comptia.org/certifications/datasys |
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NEW QUESTION # 30
Which of the following constraints is used to enforce referential integrity?
Answer: C
Explanation:
The constraint that is used to enforce referential integrity is foreign key. A foreign key is a column or a set of columns in a table that references the primary key of another table. A primary key is a column or a set of columns in a table that uniquely identifies each row in the table. Referential integrity is a rule that ensures that the values in the foreign key column match the values in the primary key column of the reference table. Referential integrity helps maintain the consistency and accuracy of the data across related tables. The other options are either different types of constraints or not related to referential integrity at all. For example, a surrogate key is a column that is artificially generated to serve as a primary key, such as an auto-increment number or a GUID (Globally Unique Identifier); a unique key is a column or a set of columns in a table that uniquely identifies each row in the table, but it can have null values unlike a primary key; there is no such constraint as TID.
NEW QUESTION # 31
Which of the following indicates why a data administrator would conduct a baseline configuration in a database?
Answer: B
Explanation:
A baseline configuration documents the database's state at a specific time, serving as a reference for future changes and ensuring consistency.
NEW QUESTION # 32
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: D
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.
NEW QUESTION # 33
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 # 34
A database's daily backup failed. Previous backups were completed successfully. Which of the following should the database administrator examine first to troubleshoot the issue?
Answer: A
Explanation:
The first thing that the database administrator should examine to troubleshoot the issue is the event log. The event log is a file that records the events and activities that occur on a system, such as database backups, errors, warnings, or failures. By examining the event log, the administrator can identify the cause and time of the backup failure, and also check for any other issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not the first priority for this task. For example, CPU usage, disk space, and OS performance may affect the performance or availability of the system, but not necessarily cause the backup failure; moreover, these factors can be checked after reviewing the event log for more information. Reference: 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 # 35
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