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List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
Explain in details about Data Sharing
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
write-set(T): Each data items that are written by a transaction T
Explain Instance and schemas? Instances and schemas: Databases changes over time as the information is deleted and inserted. The collection of information stored in database
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
DDL Compiler The DDL compiler changes the data definition statements (such as CREATE TABLE .... in SQL) into a set of tables having metadata tables. These tables have infor
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
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