Читать книгу Data Lakes For Dummies - Alan R. Simon - Страница 46

What if one of your existing data marts is an absolute work of genius? Suppose that three or four years ago, your company built a data mart to support your annual strategic planning cycle. Your strategic planning data mart has data feeds from numerous applications and systems around your enterprise. Do you really want to reinvent the wheel just because you’re now building a data lake?

Great news: You don’t have to throw away your data mart baby along with the data lake water! (Okay, maybe not the best metaphor, but you get the idea.)

Figure 2-4 shows how you can leave that strategic planning data mart in place alongside the new data lake. You’re essentially isolating that data mart from the new epicenter of your enterprise analytics. True, some data feeds will be duplicated between the strategic planning data mart and the data lake. But that’s okay! And over time, maybe you’ll decide to incorporate the strategic planning data mart into the data lake itself.

FIGURE 2-4: Leaving a data mart intact and alongside your data lake.