SCAS - BCA ANSWER SCHEMES

  Section A Answer any 5 questions. Each question carries 2 marks. 1.     Define database A database is a structured collection of data that is organized and stored in a way that facilitates efficient retrieval and manipulation. It typically consists of tables or files that are interrelated and contain information such as records, fields, and relationships. Databases are used to store, manage, and retrieve data in a systematic and organized manner. 2. List out the DDL and DML commands DDL commands: CREATE: Used to create database objects like tables, indexes, or views. ALTER: Modifies the structure of an existing database object. DROP: Deletes a database object, such as a table or index. TRUNCATE: Removes all records from a table, but retains the table structure. COMMENT: Adds comments to the data dictionary. DML commands: SELECT: Retrieves data from one or more tables. INSERT: Adds new records to a table. UPDATE: Modifies existing record...

Section A Answer any 4 questions. Weight 1 each. 1.     Write a short note on hybrid systems Hybrid Systems computing uses more than one computational technique to solve various real world problems. This integration of multiple systems in one enables us to get highly intelligent results. These results are potent as well as adaptive to any new environment. 2.     Describe the structure of an artificial neuron 3.     Compare supervised and unsupervised learning approaches in ANN. Supervised Learning Unsupervised Learning Supervised learning algorithms are trained using labeled data. Unsupervised learning algorithms are trained using unlabeled data. Supervised learning model takes direct feedback to check if it is predicting correct output or not. Unsupervised learning model does not take any feedback. Supervised learning model predicts the output. ...