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The amphetamine molecule exists as two enantiomers, [note 1] levoamphetamine and dextroamphetamine. Dextroamphetamine is the dextrorotatory , or 'right-handed', enantiomer and exhibits more pronounced effects on the central nervous system than levoamphetamine.
Age in days. This template is used on approximately 4,600 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. This template returns the number of days between two dates.
List of academic databases and search engines. This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ ...
The End date and age template displays the date that an event or entity ended. Template parameters [Edit template data] Parameter Description Type Status Year 1 A four-digit number indicating the year Example 2017 Number required Month 2 A number between 1 and 12 indicating the month Example 12 Number suggested Day 3 A number between 1 and 31 indicating the day of the month Example 31 Number ...
To store the life of John Doe in a current (non-temporal) database we use a table person (name, address). (In order to simplify, name is defined as the primary key of person.) John's father officially reported his birth on 1975-04-04. On this date a Smallville official inserted the following entry in the database: Person(John Doe, Smallville ...
A navigational database is a type of database in which records or objects are found primarily by following references from other objects. The term was popularized by the title of Charles Bachman 's 1973 Turing Award paper, The Programmer as Navigator. [1] This paper emphasized the fact that the new disk-based database systems allowed the ...
A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table, new records ...
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