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The complexity and breadth of functionally makes the DBMS an extremely
large piece of software, occupying many megabytes of disk space and
requiring substantial amounts of memory to run efficiently.
c.
Cost of DBMSs
The cost DBMSs varies significantly, depending on the environment and
functionally provided.
d. Additional hardware costs
The disk storage requirements for the DBMS and the database may necessitate
the purchase of additional storage space.
e.
Cost of conversion
In some situations, the cost of the DBMS and extra hardware may be
significant compared with the cost of converting existing applications to run
on new DBMS and hardware.
f.
Performance
Typically, a files based system is written for a specific applications, such as
invoicing. As a result, performance is generally very good. However, the
DBMS is written to be more general, to cares for many applications rather
than just one. The effect is that some applications may not run as fast as they
used to.
g. Higher impact of a failure
The centralization of resources increase the vulnerability of the system. Since
all users and applications rely on the avaibility of the DBMS, the failure of
certain components can bring operations to a halt.
Dikutip dari Connolly dan Begg (2002:29), kekurangan dalam penggunaan
basis data adalah:
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