1.   In the network and hierarchical DBMS the access paths are defined by the DBA before the database is set up and these are often referred to as navigational systems.

2.   It will probably necessitate reorganising part of the database and, therefore, navigational systems are rather inflexible once the design has been implemented.

3.   And similar navigational systems are being offered in luxury packages with some new cars.

4.   And with many foreign-policy analysts still expecting an eventual attack, the navigational system may yet have its trial by fire.

5.   Because no commercial system existed for the completely computerized operating and navigational system that Clark had envisioned for Hyperion, he decided to create his own.

6.   Between cellphones, onboard navigational systems and noisy kids, drivers have more than their fair share of distractions.

7.   But the batteries on his satellite navigational system gave out when he was deep in unfamiliar terrain and unsure how to get back to his truck.

8.   Funds have already been approved for the purchase of a new generation of experimental baggage-scanning machines and for the development of new navigational warning systems.

9.   He found himself lost on a New Hampshire mountainside when the batteries on his state-of-the-art navigational system failed.

10.   Its navigational system is a floating compass that uses two settings for forward and backward direction.