Would you want to save every query that you create? Why or why not?
What will be an ideal response?
Many queries you create are a one-of-a-kind question of your data and there would be no need or reason to save those queries. However, sometimes you need a series of queries in which each query is similar to the first. In this case, saving a query and modifying the criteria would save a lot of time.
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Indicate the error in this statement: float total_cost 0.00
A.Variables can not be initialized in the declaration statement. B. It is only missing a ;. C. It is missing a ; and and = between total_cost and 0.00. D. Float should be capitalized.
Which of the following statements is false?
a. Java SE 8 introduces a new Completable Future class (package java.util.concurrent), which implements the Future interface and enables you to asynchronously execute Runnables that perform tasks or Suppliers that return values. b. CompletableFuture static method supplyAsync asynchronously executes a Supplier task that returns a value. c. CompletableFuture static method runAsync asynchronously executes a Runnable task that does not return a result. d. CompletableFuture method get is a blocking method—it causes the calling thread to run until the asynchronous task completes and returns its results.
What does a primary key do?
a. Identifies each row of a table. b. Selects a number of rows from a database. c. Stores a bunch of related data. d. None of the above.
A PIN must be at least five characters in length and typically is limited to numbers.
Answer the following statement true (T) or false (F)