Relational calculus is said to be a declarative language. In contrast, relational algebra is said to be a procedural language. Explain what is the distinction in your own words. Besides, provide a concrete example of a pair of equivalent relational algebra and calculus query where one is clearly declarative and the other is clearly procedural

Dave has to create animations for a game. which tool can dave use?

Representa os dados de um banco de dados como uma coleç? o de tabelas constituídas por um conjunto de atributos, que definem as propriedades ou características relevantes da entidade que representam. marque a alternativa que representa o modelo descrito no enunciado. escolha uma:

In any one-minute interval, the number of requests for a popular web page is a poisson random variable with expected value 240 requests. (a) a web server has a capacity of requests per minute. if the number of requests in a one-minute interval is greater than the server is overloaded. use the central limit theorem to estimate the smallest value of for which the probability of overload is less than 0.035. note that your answer must be an integer. also, since this is a discrete random variable, don't forget to use "continuity correction". = 268 (b) now assume that the server's capacity in any one-second interval is ⌊/60⌋, where ⌊⌋ is the largest integer ≤ (this is called the floor function.) for the value of derived in part (a), what is the probability of overload in a one-second interval? this time, don't approximate via the clt, but compute the probability exactly.