The following statuses are observed:
- Relational databases are still by far the most widely used databases.
- Object-relational and NoSQL databases are gaining in popularity.
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Several technical issues have led to OODBSs’ limited strength:
- Object-relational databases: ORDBSs work via an object layer that sits atop a conventional tabular relational engine.
- Performance: OODBSs can store data sets in their entirely and thus typically run faster than relational databases. However, relational databases have reduced OODBSs’ performance advantage with improved optimizers.
- Standardization: The Object Database Management Group has developed ODMG standards. However, vendors behind ODMG represent zero billion dollars in revenue while the vendors behind SQL represent several billion in revenue.
- Business issue: Companies usually loathe to construct systems for a different technology, unless it offers a compelling business advantage, which has rarely been demonstrated by OO systems.
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If con is the opposite of pro, does it mean Congress is the opposite of Progress? |