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Consider a database of sales, perhaps from a store chain, classified by date, store and product. The image of the schema to the right is a star schema version of the sample schema provided in the snowflake schema article. Fact_Sales is the fact table and there are three dimension tables Dim_Date, Dim_Store and Dim_Product.
CSV Clustering, Events, Language Detection 2018 [32] R. Kulkarni Reuters News Wire Headline 11 Years of timestamped events published on the news-wire Publish time, Headline Text 16,121,310 CSV NLP, Computational Linguistics, Events 2018 [33] R. Kulkarni The Irish Times Ireland News Corpus 24 Years of Ireland News from 1996 to 2019
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
Comma-separated values (CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text, where each line of the file typically represents one data record. Each record consists of the same number of fields, and these are separated by commas in the ...
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Timeline of the highest-selling album record Year record set Artist Album Record-setting sales (millions) Total sales (millions) Ref(s) 1945 Various Artists Oklahoma! (78 rpm album) 0.5 1.0 [216] [217] After 1946 Al Jolson: The Jolson Story: 1 [218] 1956 Various Artists Oklahoma! (LP album) 1.75 2.5 [219] 1956/1957 Various Artists My Fair Lady: 2 5
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A relational database (RDB [1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [2]A database management system used to maintain relational databases is a relational database management system (RDBMS).