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  2. Sixth normal form - Wikipedia

    en.wikipedia.org/wiki/Sixth_normal_form

    The sixth normal form is currently as of 2009 being used in some data warehouses where the benefits outweigh the drawbacks, [9] for example using anchor modeling.Although using 6NF leads to an explosion of tables, modern databases can prune the tables from select queries (using a process called 'table elimination' - so that a query can be solved without even reading some of the tables that the ...

  3. Vehicle registration plates of Illinois - Wikipedia

    en.wikipedia.org/wiki/Vehicle_registration...

    The University of Illinois study mentioned by Powell was conducted in 1957 and 1958, and also recommended the addition of letters to the Illinois license plate. [6] In 1969 Powell backed a plan to implement two-year plates, which would have cost twice the annual registration price, but the plan did not pass the legislature.

  4. Fourth normal form - Wikipedia

    en.wikipedia.org/wiki/Fourth_normal_form

    Fourth normal form (4NF) is a normal form used in database normalization. Introduced by Ronald Fagin in 1977, 4NF is the next level of normalization after Boyce–Codd normal form (BCNF). Whereas the second , third , and Boyce–Codd normal forms are concerned with functional dependencies , 4NF is concerned with a more general type of ...

  5. 1890 United States census - Wikipedia

    en.wikipedia.org/wiki/1890_United_States_census

    A Hollerith tabulator that has been modified for the first 1890 census tabulation; the punched-card reader was removed, replaced by a simple keyboard. [2]: 61 The 1890 census was the first to be compiled using methods invented by Herman Hollerith and was overseen by Superintendents Robert P. Porter (1889–1893) and Carroll D. Wright (1893–1897).

  6. Negation normal form - Wikipedia

    en.wikipedia.org/wiki/Negation_normal_form

    Negation normal form is not a canonical form: for example, () and () are equivalent, and are both in negation normal form. In classical logic and many modal logics , every formula can be brought into this form by replacing implications and equivalences by their definitions, using De Morgan's laws to push negation inwards, and eliminating double ...

  7. U.S. Route 66 in Illinois - Wikipedia

    en.wikipedia.org/wiki/U.S._Route_66_in_Illinois

    Aside from the six sections of the route in Illinois that have been listed on the National Register of Historic Places, the entire stretch of US 66 through Illinois has been declared a National Scenic Byway and is alternatively known as the Illinois Route 66 Scenic Byway. [6] [54] The 436-mile (702 km) stretch of road was declared the Illinois ...

  8. Starved Rock State Park - Wikipedia

    en.wikipedia.org/wiki/Starved_Rock_State_Park

    Starved Rock State Park is a state park in the U.S. state of Illinois, characterized by the many canyons within its 2,630 acres (1,064 ha).Located just southeast of the village of Utica, in Deer Park Township, LaSalle County, Illinois, along the south bank of the Illinois River, the park hosts over two million visitors annually, the most for any Illinois state park.

  9. U.S. Route 6 in Illinois - Wikipedia

    en.wikipedia.org/wiki/U.S._Route_6_in_Illinois

    U.S. Route 6 (US 6) in the state of Illinois is an east–west arterial surface road that runs 179.88 miles (289.49 km) from the city of Moline in the Quad Cities area to Lansing at the Indiana state line.

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