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Time period definitions use two standard table columns as the start and end of a named time period, with closed set-open set semantics. This provides compatibility with existing data models, application code, and tools
Sunflower Records was a Los Angeles, California-based record label founded by songwriter Mack David and music industry veteran Danny Kessler that operated from 1970 to 1972. The label was distributed by MGM Records .
More specifically the temporal aspects usually include valid time, transaction time and/or decision time. Valid time is the time period during or event time at which a fact is true in the real world. Transaction time is the time at which a fact was recorded in the database. Decision time is the time at which the decision was made about the fact ...
Topics about Sunflower Records albums in general should be placed in relevant topic categories This category contains studio albums released on the Sunflower Records label. Please move any non-studio albums to an appropriate subcategory per WikiProject Albums guidelines .
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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 ...
The plant has an erect rough-hairy stem, reaching typical heights of 3 metres (10 feet). The tallest sunflower on record achieved 9.17 m (30 ft 1 in). [3] Sunflower leaves are broad, coarsely toothed, rough and mostly alternate; those near the bottom are largest and commonly heart-shaped.
Mount Sunflower was designated as Kansas’s highest point by the United States Geological Survey in 1961. In the late 1970s Ed Harold decided to commemorate this site, homesteaded by his grandparents in 1906. The most famous attraction at the site is the sunflower sculpture made from railroad spikes that are welded together. [citation needed]