ER Model is used to model the logical view of the system from the data perspective which consists of these components: Entity Entity Type Entity Set An Entity may be an object with a physical existence - a particular person, car, house, or employee...
Two Level Architecture Two level architecture is similar to a basic client-server model. The application at the client end directly communicates with the database at the server side. API's like ODBC, JDBC are used for this interaction. The server si...
Important Terminologies Database: Database is a collection of inter-related data which helps in efficient retrieval, insertion and deletion of data from database and organizes the data in the form of tables, views, schemas, reports etc. For Example,...
Layers OSI (Open Systems Interconnection) Model: Physical layer Data layer Network layer Transport layer Session layer Presentation layer Application layer TCP/IP (Transmission Control Protocol/ Internet Protocol) Reference Model: Link layer (== D...
People publish their solutions without sharing any information about how they derived.They do not provide much more explanation . This particular problem and most of others can be approached using the following sequence: Find recursive relation Rec...
I was Preparing for Amazon SDE role & found these questions on various platforms like Leetcode,Geeksforgeeks etc. Go through the leadership principles of Amazon thoroughly and pay great importance to any kind of behavioral questions that might come y...