Oracle Database Administration from Zero to Hero - Overview of RDBMS (Part 2 of 2)

The lecture covers different application deployment models, including two-tier, three-tier, and n-tier architectures, and their interaction with Oracle databases. It discusses the challenges of the two-tier model and the advantages of three-tier and n-tier models. The video also categorizes applications based on transaction types: OLTP, DSS, and hybrid applications, and compares OLTP and DSS databases. Additionally, it introduces NoSQL databases, highlighting their structure and use cases in big data and real-time applications. The lecture concludes with a summary of key learnings.

What is a major drawback of the two-tier model?

• Incompatibility with modern databases

• Complex network requirements

• Limited scalability

• High cost of deployment and maintenance

How do users typically access applications in a three-tier model?

• By installing the application locally

• Through a web browser using a URL

• Via a command-line interface

• Directly through the database

Which model allows for application servers to be categorized into more than one layer?

• Two-tier model

• Three-tier model

• N-tier model

• Single-tier model

What type of applications typically have a high number of users sending small transactions?

• Decision Support Systems (DSS)

• Batch processing systems

• Online Transaction Processing (OLTP)

• Hybrid applications

Which application type is primarily used for analytical processing on large data sets?

• OLTP

• DSS

• Hybrid

• Real-time processing

What is a key characteristic of warehouse databases?

• High concurrency

• Denormalized schema design

• Short data retention

• Predefined queries

In OLTP databases, how is the schema typically designed?

• Hierarchical

• Denormalized

• Flat

• Normalized

What is a significant difference between NoSQL databases and RDBMS?

• NoSQL databases are slower

• NoSQL databases are not relational

• NoSQL databases focus on data integrity

• NoSQL databases use SQL for queries

Which of the following is a popular NoSQL database?

• PostgreSQL

• MongoDB

• MySQL

• Oracle Database

Why are NoSQL databases becoming popular in big data applications?

• They provide faster data retrieval

• They are easier to manage

• They offer better data integrity

• They are cheaper to deploy