Using erwin, provide an erd diagram that adds the capability of tracking price changes to the database. for example, products’ unit prices will change over time; therefore, for each productid, a given unit price will have a beginning date and an ending date. since each the unitprice for each productid will change over time, and we need to store and maintain this information, unitprice then becomes a multi-valued attribute, and we know that this is unacceptable in 3rd normal form (3nf). since we must maintain 3nf, we must refer to the rules for handling a multi-valued attribute. in summary, you must create a new entity (i suggest the name price_history) that has a one-to-many relationship with product. unitprice must be removed from the product entity. price_history will have attributes of productid, startdate, enddate, and unitprice. since each productid will have multiple records in price_history, you must create a composite primary key for price_history based on two attributes (hint: unitprice is not one of are a list of the entities and attributes for the statementscustomer_tcustomerid (pk) (fk) of employee_t

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This program should be a short piece of code that prints all of the positive integers from 1 to 100 as described more fully below. the program may contain multiple methods, and if using an oo language, should be contained within a single class or object. the program should be designed so that it begins execution when invoked through whichever mechanism is most common for the implementation language. â–ş print out all positive integers from 1 to 100, inclusive and in order. â–ş print messages to standard output, matching the sample output below. â–ş in the output, state whether the each integer is 'odd' or 'even' in the output. â–ş if the number is divisible by three, instead of stating that the number is odd or even, state that the number is 'divisible by three'. â–ş if the number is divisible by both two and three, instead of saying that the number is odd, even or divisible by three; state that the number is 'divisible by two and three'. â–ş design the logic of the loop to be as efficient as possible, using the minimal number of operations to perform the required logic. sample output the number '1' is odd. the number '2' is even. the number '3' is divisible by three. the number '6' is divisible by two and three.

Anul 2017 tocmai s-a încheiat, suntem trişti deoarece era număr prim, însă avem şi o veste bună, anul 2018 este produs de două numere prime, 2 şi 1009. dorel, un adevărat colecţionar de numere prime, şi-a pus întrebarea: “câte numere dintr-un interval [a,b] se pot scrie ca produs de două numere prime? “.