Are SR latches suitable to be used as RAM?
"Clock triggered SR flip flop with clock input" is basically a "D type flip flop". This is a very standard way of doing local storage within digital logic.

You don't explicitly read from it, it continuously outputs the stored value. If you have an array of them you need selectors of some sort (multiplexors, tri-state outputs, crossbar switches) to choose which one to use as the input of the next logic stage.

Edit: there's a question of scale. Flops are suitable for storing small amounts of data local to some logic. The next step up is SRAM: http://tams-www.informatik.uni-hamburg.de/applets/sram/ ; which is practical for a few hundred kilobytes. Beyond that DRAM, which uses a single transistor's gate capacitance to store each bit of data in. DRAM can be made extremely dense, but for manufacturing reasons usually has to be on a separate chip.

See also How does random memory access of RAM work?