What is the role of alerting in a monitoring system?
- Archive historical data
- Display real-time data
- Generate reports
- Notify stakeholders about abnormal conditions
The primary role of alerting in a monitoring system is to notify stakeholders about abnormal conditions or events. Alerts enable timely responses to issues, helping in proactive troubleshooting and maintaining system reliability.
The "Application" tab in Browser Developer Tools is used for managing _______.
- Application-related resources
- Code syntax
- Memory and storage
- Network requests
The "Application" tab in Browser Developer Tools is used for managing application-related resources. It includes features for working with local storage, session storage, cookies, and other application-specific data.
Materialized views are often employed in query optimization to store _______.
- Aggregated data
- Intermediary results
- Precomputed results
- Temporary data
Materialized views in query optimization are used to store precomputed results. This involves storing the output of a query in a physical table, which can significantly improve the performance of complex queries by reducing the need for repeated computations.
You're designing a software system where you need to model different types of vehicles. Explain how you would utilize OOP concepts such as inheritance and polymorphism in this scenario.
- Abstraction for code reuse and Inheritance for encapsulation
- Encapsulation for security and Abstraction for complexity
- Inheritance for code reuse and Polymorphism for flexibility
- Polymorphism for security and Inheritance for flexibility
In this scenario, Inheritance can be used to model the common attributes of vehicles in a base class, and Polymorphism allows you to use a single interface for various types of vehicles, enabling flexibility and maintainability.
When planning data migration, what role does data profiling play?
- Analyzing Data Structure
- Assessing Data Quality
- Evaluating Network Speed
- Identifying Data Owners
Data profiling plays a crucial role in planning data migration by assessing the quality of the data. It involves analyzing the structure, integrity, and completeness of the data to identify potential issues that may impact the migration process. This proactive step helps in creating a more accurate migration plan and ensuring successful data transfer.
In database management, what is cardinality, and how does it impact query optimization?
- The number of rows in a table
- The relationship between tables
- The size of the database
- The uniqueness of values in a column
Cardinality in database management refers to the relationship between tables. It impacts query optimization by influencing the choice of join algorithms and the order in which tables are accessed, crucial for performance.
Which front-end framework is known for its extensive ecosystem and strong community support?
- Angular
- React
- Svelte
- Vue.js
React is a front-end framework known for its extensive ecosystem and strong community support. It is widely used for building user interfaces and offers a declarative approach to programming.
What is the role of a session cookie in web authentication?
- A session cookie stores user-specific information on the server to maintain stateful communication between the client and the server during a user's session.
- Session cookies are not related to web authentication.
- Session cookies are used for long-term storage of user credentials on the client side.
- Session cookies provide authentication by storing user credentials in a public directory.
Session cookies play a crucial role in web authentication by maintaining user state on the server. They store information for a session, allowing seamless communication between the client and server.
What does SQL stand for?
- Sequential Query Language
- Simple Query Language
- Standard Query Language
- Structured Query Language
SQL stands for Structured Query Language. It is a domain-specific language used for managing and manipulating relational databases.
What is the purpose of the FOREIGN KEY constraint in a relational database?
- Concatenates columns
- Defines a primary key
- Ensures referential integrity
- Limits the number of rows
The FOREIGN KEY constraint in a relational database is used to ensure referential integrity between two tables. It establishes a link between the data in two tables, ensuring that relationships between them are maintained.