CompTIA DS0-001 Dumps Questions Answers

The best action for the administrator to take is to create a view. A view is a virtual table that shows a subset of data from one or more tables. The administrator can use a view to provide access to data from two different tables to multiple group users without exposing the restricted columns. The view can also simplify the queries and improve the performance of the reporting process. The other options are either not suitable for this scenario or do not address the requirement of hiding some columns from users. For example, creating a stored procedure would require additional coding and execution, creating a csv export would create a static file that may not reflect the latest data changes, and creating a trigger would perform an action in response to an event rather than provide access to data. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.

The correct answer is B. View. CompTIA DataSys+ documentation explains that views are virtual tables created from stored SQL queries that present data from one or more underlying tables without physically storing the data themselves. This makes views an ideal solution when users repeatedly query the same datasets and want consistent results without rewriting SQL statements.

In this scenario, the business analyst runs the same queries every quarter. By using a view, the analyst can simply query the view as if it were a table, eliminating the need to re-create complex SQL joins, filters, or aggregations each time. From a usability standpoint, views simplify access to data and reduce the likelihood of query errors, which aligns with DataSys+ objectives related to usability and abstraction.

From the database administrator’s perspective, views also help optimize disk space. Because views do not store data physically (unlike tables), they consume minimal storage while still providing a reusable query structure. This is especially important in environments where storage efficiency and performance tuning are key responsibilities of the DBA.

Option A, a table, would require duplicating data, increasing disk usage and maintenance overhead. Option C, a function, is typically used to return a calculated value and is not designed to represent reusable multi-row query results for reporting purposes. Option D, a stored procedure, can encapsulate logic and queries, but it is generally used for executing operations rather than providing a simple, queryable dataset for analysts. Stored procedures may also introduce additional complexity and are less intuitive for ad-hoc querying.

CompTIA DataSys+ emphasizes views as a best practice for abstraction, security, and efficiency. They support repeated reporting needs while preserving storage resources and simplifying database management. Therefore, B. View is the most accurate and fully aligned answer.

Guage

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 referenced 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. References: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.2 Given a scenario, execute database tasks using scripting and programming languages.