Data stands for facts, details and the information you are trying to make sense of. Streams of it in a dream are read as an analytical mind at work, or as feeling reduced to numbers.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.