Consider the following relational database that stores information about bars and customers: Drinker (name, address) Bar (name, address) Beer (name, brewer) Frequents (drinker, bar, times a week) Likes (drinker, beer) Serves (bar, beer, price) Write the following queries in relational algebra: 1. Find all drinkers who frequent only those bars that serve some beers they like. 2. Find all drinkers who frequent every bar that serves some beers they like.3. Find those drinkers who enjoy exactly the same set of beers as Amy.،​

17. implement the jvm dload instruction for the mic-2. it has a 1-byte index and pushes the local variable at this position onto the stack. then it pushes the next higher word onto the stack as well

Hassan is writing his master’s thesis, which is a thirty-page document. he received some feedback from his professor in the form of comments, but does not see where the comments are. what is the fastest way for hassan to find the feedback?

[a] create a class called “cycle” which has two instance integer variables as properties, “numberofwheels” and “weight.” create a constructor with two parameters, using the same variable names in the parameter list. assign each variable to numberofwheels” and “weight” respectively. write a separate application to test the class and display its properties. note: do not change the names of the instance variables or the variables listed in the constructor’s parameter list. [b] edit your class cycle by adding a default constructor which will assign the default values of 100 to represent the numberofwheels, and 1000 to represent the weight, by invoking a call to the other constructor. modify your application created in [a] to test the class.