Reading both pages and segments via applying a columnar-formatted structuring-based read process

A parallelized data input sub-system of a database system, the parallelized data input sub-system comprises:

• a plurality of computing device clusters, wherein a computing device cluster of the plurality of computing device clusters includes a plurality of computing devices, wherein the plurality of computing device clusters includes pluralities of computing nodes, wherein a plurality of the pluralities of computing nodes is configured as loader computing nodes, wherein the loader computing nodes are operable, in parallel, to receive respective portions of a dataset, wherein a loader computing node of the loader computing nodes is operable to:
• receive rows of columnar data of a first portion of the portions of the dataset;
• convert a page of the rows of columnar data into a page of column oriented data;
• temporarily store the page of column oriented data;
• convert the page of column oriented data into long term storage data, wherein the long term storage data has a corresponding column orientation to the page of column oriented data;
• and
• while receiving the first portion:
• receive a query request regarding a specific page of column oriented data prior to the specific page of column oriented data being converted into specific long term storage data;
• and
• when the specific page of columnar oriented data has been temporarily stored:
• provide the specific page of column oriented data to a computing device of the database system executing the query on the specific page of column oriented data.