There are several different types of chuck available, depending on the required use and the type of hammer drill it will be used with.
For the serious DIYer, an SDS-Plus chuck is most robust. It has grooves that lock onto the grooves of SDS drill bits. No tools are required to insert or remove the bits and many different bits are available for all sorts of various jobs including cold chisel bits for breaking concrete, tile remover bits for pulling ceramic tiles off walls and floors, scaling chisel bits for removing rust and weld spatter. Be aware of the fact that some of these bits can only be used with rotary hammer drills with the rotary function turned off.
A regular chuck adaptor can be attached to an SDS chuck enabling the drill to use standard drill bits without the fluting on the drill shaft.
Chucks that use keys to tighten are generally more hardwearing than the keyless types but take longer to swap drills. Cheaper chucks are available that contain some plastic parts. Needless to say these might look nice when new but are not as durable as all metal chucks.
Hammer drill bits are normally available in two different types. A standard carbide bit works well for drilling into ordinary cement but using a rebar bit would enable the operator to tackle any rebar encountered inside the cement too.