Question
Which of the following is the most accurate description
of semi-structured data ?Solution
Explanation: Semi-structured data, such as JSON (JavaScript Object Notation) files, lies between structured and unstructured data. It has an organized schema (e.g., key-value pairs) but does not conform to strict tabular formats like relational databases. JSON is widely used in APIs, web applications, and NoSQL databases because it allows flexibility while still enabling data to be queried or processed programmatically. Unlike structured data, which requires predefined schemas, semi-structured data provides adaptability for evolving datasets. JSON's format, combining hierarchy and flexibility, is a hallmark of semi-structured data. Option A: Relational databases store structured data in tables, which is not semi-structured. Option B: Videos and images without metadata are unstructured data, lacking any predefined schema. Option D: Plain text documents without formatting fall into the unstructured category, not semi-structured. Option E: Categorical data relates to types of variables, not data formats.
A train crosses a pilar in 20 seconds and a platform of length 300 metres in 25 seconds,then what will the 120% of the length of the train.
- If a train takes 30 seconds to pass a tree and 40 seconds to pass a bridge that is 250 meters long, what is the speed of the train?
Two cars start from a place with a speed of 45 km/hr at an interval of 10 minutes. What is the speed of a man coming from the opposite direction towards...
Train A and B can cross a 300 meters long platform in the same time. The length of Train A is 300 meters and the speed of Train B is 5/4 times the spee...
- A fast-moving train at 55 m/s crosses a lamp post in 14 seconds. How long will it take for the train to completely pass through a 900-metre-long railway st...
- The distance between city L and city M is 624 km. A train starts from L at 8 a.m. at 48 km/h. Another train starts from M at 9:30 a.m. towards L at a speed...
200 metre long train ‘A’ can cross a platform of length 180 metres in 10 seconds. If the speed of train ‘B’ is 6 m/s more than that of train ‘...
1260 metres long train crosses a man who is moving in the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 21 se...
Car 'X' travels for 4 hours to reach from point A to B. Car 'Y' travels 210 km to reach from point B to C in 3 hours. Distance travelled by car 'X' to c...
Train 'K' leaves at 6:00 PM on Saturday from Ahmedabad station and reaches Surat station at 8:00 AM the next day, while train 'L' leaves at 7:00 PM on S...