________ can be linear, curved, or follow a predetermined shape

The following multiversion concurrency control has been proposed.

Reads are satisfied using the (committed) version of the database that existed when the transaction made its first read request. Writes are controlled by long-duration write locks on tables. Does the control always produce serializable schedules? If not, give a nonserializable schedule it might produce.

Which of the following statements is false?

a. Streams are objects that implement interface Stream (from the package java.util.stream) and enable you to perform functional programming tasks. b. Streams move elements through a sequence of processing steps—known as a stream pipeline—that begins with a data source, performs various intermediate operations on the data source’s elements and ends with a terminal operation. c. A stream pipeline is formed by chaining method calls. d. An advantage of streams over collections is that streams have their own storage, so once a stream is processed, it can be reused, because it maintains a copy of the original data source.