Banking GK Questions 2026

NoSQL databases drop the fixed table and row structure so that they can hold large and irregular data and spread it over many machines, and MongoDB is the best known document store, keeping records as documents in a format close to JSON.

Clustering is unsupervised because the data carries no labels: the algorithm itself groups similar records, k-means doing so by placing k centres and moving them until each record sits with its nearest centre.

ETL names the three steps through which data enters a warehouse: it is extracted from the operational systems that produced it, transformed so that formats, units, codes and duplicates are reconciled into one consistent shape, and then loaded into the warehouse tables.

It uses historical data with statistical models and machine learning to estimate what will probably happen next, such as which loan accounts are likely to slip into default or how much electricity a city will draw next summer.

Storage units climb in powers of two, each unit being 1,024 times the one below it, so 1,024 bytes make a kilobyte, 1,024 kilobytes a megabyte, 1,024 megabytes a gigabyte, 1,024 gigabytes a terabyte and 1,024 terabytes a petabyte.

The Apriori algorithm first finds the sets of items that appear together often enough to pass a support threshold, using the rule that any subset of a frequent set must itself be frequent, and then turns those frequent sets into rules measured by confidence.

In the process called Knowledge Discovery in Databases, or KDD, the stages run from selection of the relevant data, through cleaning and preprocessing, to transformation, then data mining, and finally interpretation and evaluation of what was found.

It splits a large file into fixed-size blocks, 128 megabytes by default in current versions, scatters those blocks over the machines of the cluster and keeps more than one copy of each block so that the failure of a machine does not lose data.

Virtualisation is the technique of running several logical machines on one physical machine and belongs to the chapter on cloud computing, not to the definition of big data.

On-Line Transaction Processing is the mode in which a bank counter, a railway booking window or a payment gateway works: each transaction is processed the moment it is entered, so the response to the user is immediate, and every committed transaction is written at once, so the database always reflects…

A data warehouse is exactly that, a central store into which data from many operational systems is extracted, cleaned and loaded so that it can be analysed for decision making.

Bibi Ka Maqbara at Aurangabad in Maharashtra was built by prince Azam Shah in memory of his mother Dilras Banu Begum, who bore the title Rabia-ud-Daurani and was the wife of Aurangzeb.

Sher Shah Suri, who defeated Humayun and ruled from 1540 to 1545, was buried at his home town Sasaram in Bihar, and his tomb stands on a stone platform in the middle of a large artificial tank, an octagonal building counted among the finest works of the period between the…

Gol Gumbaz at Bijapur, now also called Vijayapura, is the tomb of Muhammad Adil Shah of the Adil Shahi dynasty and carries one of the largest masonry domes in the world, raised over a square hall without any pillar inside.

Humayun's Tomb was raised in Delhi by his widow Bega Begum, also known as Haji Begum, with Mirak Mirza Ghiyas as the architect, and it is the first garden tomb of the subcontinent, placed at the centre of a walled char bagh crossed by water channels.

Aurangzeb died in 1707 in the Deccan and was buried at Khuldabad, a small town near Aurangabad, beside the shrine of his spiritual guide Sheikh Zainuddin.

Sadaiv Atal is the memorial of Atal Bihari Vajpayee, who was Prime Minister of India three times and died in August 2018; it stands near Raj Ghat and its name plays on his own name, meaning forever unmoved.

Chaitya Bhoomi, on the sea front at Dadar in Mumbai, is the place where Dr Bhimrao Ramji Ambedkar, the chairman of the drafting committee of the Constitution, was cremated in December 1956, and lakhs of followers gather there on 6 December each year.

Kisan Ghat on the Yamuna bank in Delhi is the samadhi of Chaudhary Charan Singh, who was Prime Minister of India and is remembered above all as a leader of the farmers, which is why his memorial is named after the kisan.

Vijay Ghat in Delhi is the samadhi of Lal Bahadur Shastri, the second Prime Minister of India, who died at Tashkent in January 1966, and the name recalls the victory of India in the war of 1965 fought during his term.