Some of the important characteristics of object relational databases are
1.Nested relations
2. Complex types and object-orientation
3. Querying with complex types
Some of the important characteristics of object relational databases are
1.Nested relations
2. Complex types and object-orientation
3. Querying with complex types
A working group composed of ___________ representatives of the OODBMS vendors established ODMG-93 standard.
A working group composed of ___________ representatives of the OODBMS vendors established ODMG-93 standard.
Each SQL3 table has a predefined column called as________ that contains row identifiers which can be used as values in other rows.
Each SQL3 table has a predefined column called as________ that contains row identifiers which can be used as values in other rows.
______ acts as a framework into which specialised software modules can be embedded.
______ acts as a framework into which specialised software modules can be embedded.
___________is a template index structure based on B+ trees, which allows most of the tree index structures invented so far to be implemented with only a few lines of user-defined ADT code.
___________is a template index structure based on B+ trees, which allows most of the tree index structures invented so far to be implemented with only a few lines of user-defined ADT code.
A combination of an atomic data type and its associated methods is called an ________ type.
A combination of an atomic data type and its associated methods is called an ________ type.
______language defines how to formulate a database schema (the structure of a database). It is neutral to programming languages
______language defines how to formulate a database schema (the structure of a database). It is neutral to programming languages
The _________has the right to read more data from pages in memory, every time a single execution of the embedded logic is completed.
The _________has the right to read more data from pages in memory, every time a single execution of the embedded logic is completed.
ANSI and ISO have developed a new SQL standard as ________.
ANSI and ISO have developed a new SQL standard as ________.
Out of RDBMS, OODBMS and ORDBMS, which has got the best performance?
Out of RDBMS, OODBMS and ORDBMS, which has got the best performance?
State true or false
Caching avoids the expenditure of referring to disk every time the page is accessed.
State true or false
Caching avoids the expenditure of referring to disk every time the page is accessed.
The ability to store, retrieve and modify persistent objects in Smalltalk is provided by the _______Smalltalk binding
The ability to store, retrieve and modify persistent objects in Smalltalk is provided by the _______Smalltalk binding
The type constructors are also known as __________types
The type constructors are also known as __________types
Which one of the following is the easiest to use?
Which one of the following is the easiest to use?
________ determines how the various objects are represented for exchanging them between different OODBMS
________ determines how the various objects are represented for exchanging them between different OODBMS