List of top Computer Science and IT Engineering Questions asked in GATE Data Science and Artificial Intelligence

Consider a database relation \( R \) with attributes \( A, B, C, D, E, F, G \), and having the following functional dependencies: \[ A \rightarrow BCEF \quad E \rightarrow DG \quad BC \rightarrow A \] Which of the following statements is/are correct?

Consider the following two relations, named Customer and Person, in a database:

\[ \text{Person} \left( \begin{array}{l} \text{aadhaar CHAR(12) PRIMARY KEY,} \\ \text{name VARCHAR (32);} \end{array} \right) \]

\[ \text{Customer} \left( \begin{array}{l} \text{name VARCHAR (32),} \\ \text{email VARCHAR(32) PRIMARY KEY,} \\ \text{phone CHAR(10),} \\ \text{aadhaar CHAR(12),} \\ \text{FOREIGN KEY (aadhaar) REFERENCES Person (aadhaar);} \end{array} \right) \]

Which of the following statements is/are correct?