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NEW QUESTION # 109
(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: D
Explanation:
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
NEW QUESTION # 110
A company needs to prepare a document that establishes the responsibilities, metrics, penalties, and other generalities that a provider would have to fulfill for customers to use its platforms.
Which of the following documents meets these requirements?
Answer: C
Explanation:
The document that meets these requirements is an SLA. An SLA, or Service Level Agreement, is a contract between a service provider and a customer that defines the scope, quality, and terms of the service delivery.
An SLA typically includes the responsibilities, metrics, penalties, and other generalities that a provider would have to fulfill for customers to use its platforms. An SLA also establishes the expectations and obligations of both parties, as well as the methods for measuring and monitoring the service performance. The other options are either different types of documents or not related to service delivery. For example, a DOU, or Data Use Agreement, is a document that governs the sharing and use of data between parties; an MOU, or Memorandum of Understanding, is a document that expresses a mutual agreement or intention between parties; a SOW, or Statement of Work, is a document that describes the specific tasks and deliverables of a project or contract. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.4 Given a scenario, implement service level agreements.
NEW QUESTION # 111
Which of the following have data manipulation and procedural scripting power? (Choose two.)
Answer: B,C
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. 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 # 112
A DBA left the company, and the DBA's account was removed from the system. Soon after, scheduled jobs began failing.
Which of the following would have most likely prevented this issue?
Answer: C
Explanation:
The most likely way to prevent this issue is to use service accounts. Service accounts are special accounts that are used by applications or services to perform tasks or run jobs on behalf of users.
Service accounts have limited permissions and access rights that are tailored to their specific functions. By using service accounts, the DBA can ensure that scheduled jobs can run independently of individual user accounts, and avoid failures due to account removal or changes.
The other options are either not related or not effective for this issue. For example, load balancing is a technique that distributes the workload across multiple servers or resources to improve performance and availability; business continuity plan is a plan that outlines how an organization will continue its operations in the event of a disaster or disruption; assigning a data steward is a process that designates a person who is responsible for ensuring the quality and governance of data.
NEW QUESTION # 113
Which of the following describes the purpose of a snapshot?
Answer: B
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 # 114
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