Consider the following two statements:
Statement I: Relational database schema represents the logical design of the database.
Statement II: Current snapshot of a relation only provides the degree of the relation.
In the context to the above statements, choose the correct option from the options given below:

Correct option is A

Statement I correctly describes the relational database schema as the logical design of the database. However, Statement II is incorrect because the current snapshot of a relation provides the cardinality (number of tuples) of the relation, not just the degree.
Information Booster
1. Analysis of Statement I:
· Relational Database Schema: Represents the logical structure of the database, including the relations, attributes, and constraints.
· It defines how the data is organized and how the relations are interconnected.
· Example: A table schema in SQL defines the column names, data types, and primary/foreign keys.
2. Analysis of Statement II:
· The degree of a relation refers to the number of attributes (columns) in the relation.
· The current snapshot of a relation refers to its instance, which includes the tuples (rows) and their values at a given time.
· The snapshot provides the cardinality (number of tuples) and the degree, but it is incorrect to say it provides only the degree.
3. Key Definitions:
· Degree: Number of attributes (columns) in a relation.
· Cardinality: Number of tuples (rows) in a relation at a given point in time.
Additional Knowledge
· Schema vs. Instance:
· Schema: Logical blueprint of the database, defining its structure (remains fixed unless explicitly modified).
· Instance: The actual content of the database at a particular moment (dynamic, as it changes with insertions, deletions, and updates).
· Example:
· A relation "Students" with attributes (ID, Name, Age) has a degree of 3.
· If it has 5 rows, its cardinality is 5.