問題文
A Sorter transformation in the nightly load is handed more rows than the memory it was given can hold, so it spills onto disk, and the team has to say how much room it needs there. Separately the developer is setting up two file definitions, one laid out in columns of a set width and one where a character marks the boundary between fields, and has to say for which of the two a stand-in character for empty values has to be settled. Which pairing states both?
選択肢
- The room the object needs on disk once it spills is about the size of it, and the kind of file for which a stand-in character for empty values has to be settled is files of stated widths.
- The room the object needs on disk once it spills is about the size of it, and the kind of file for which a stand-in character for empty values has to be settled is files with the divider.
- The room the object needs on disk once it spills is twice the size of it, and the kind of file for which a stand-in character for empty values has to be settled is files with the divider.
- The room the object needs on disk once it spills is twice the size of it, and the kind of file for which a stand-in character for empty values has to be settled is files of stated widths.