Question
Why is metadata crucial in the management of
data?Solution
Metadata is essentially data about data —it provides information about the structure, origin, usage, and meaning of the data. This is crucial for understanding how data is organized, where it comes from, and how it should be interpreted. For example, metadata in a database may describe the type of data stored in a column, the relationships between tables, and the constraints or business rules that govern the data. In file systems, metadata includes information like file size, creation date, and file type, helping users and applications process and manage the data correctly. Option B (Metadata is only useful for storing data in databases) is incorrect because metadata is used in a variety of contexts, not just in databases. Option C (Metadata eliminates the need for data cleaning) is incorrect because metadata does not address data quality issues directly; it helps in understanding the data structure and context. Option D (Metadata directly affects the data analysis outcome) is incorrect because while metadata helps organize and understand the data, it does not directly affect the analysis outcome, which depends on the data itself. Option E (Metadata provides a means to visualize data more effectively) is incorrect because metadata helps organize data, but visualization depends on how the actual data is represented.
Founded in 1950, one of the industrial units owned by Indian Railways is named after the Indian freedom fighter:
_____, a member of the 1967 batch, made it to the position of Financial Commissioner of the Indian Railways Board.
The entire length of 256.551 km from Gomoh (Nimiaghat) to Sonnagar (Chiraila Puthu) of the dedicated freight corridor network has been divided into ____...
For the Darjeeling Himalayan Railway, protective measures are enshrined in the Railway Act of 1989, which replaced the:
When was it decided to replace existing rail networks by zones?
Which system manages freight operations in Indian Railways?
The first passenger train that ran between Boribunder and Thane, covered a distance of:
The total of 42 separate railway systems, including ______ owned by the former Indian princely states, existed at the time of independence spanning a t...
What is the purpose of Rail Green Points (RGP) introduced by Indian Railways?
Which innovation stabilizes railway tracks in flood-prone areas?