Using the notation exemplified in following question , list a set of tables and attributes (and identify keys) to represent the following data:
in a very simple school database, students have a student id and a name. each student has only one advisor (who has an id and a name). each advisor advises many students. students take many courses. each course has an id, a name, and the number of credits. the database also stores when a student took a course (the semester/year) and his/her final grade for that course (on that semester).

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;

Negative methods of behavior correction include all but this: sarcasm verbal abuse setting an example for proper behavior humiliation

What provides an array of buttons for quick access to commonly used commands and tools