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Capgemini
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Database architecture refers to the design and structure of a database system.
Database architecture includes the organization of data, storage, retrieval, and security mechanisms.
It involves defining the relationships between data elements and how they are stored and accessed.
Examples of database architectures include hierarchical, network, relational, and object-oriented.
Database architecture also includes the choice ...
Delete removes rows one by one, while truncate removes all rows at once.
Delete is a DML command, while truncate is a DDL command.
Delete can be rolled back, while truncate cannot be rolled back.
Delete fires triggers, while truncate does not fire triggers.
Delete is slower as it logs individual row deletions, while truncate is faster as it logs the deallocation of the data pages.
Example: DELETE FROM table_name WHERE condi
I applied via Naukri.com and was interviewed in Aug 2021. There was 1 interview round.
DDL is used to create, modify or delete database objects while DML is used to manipulate data within those objects.
DDL stands for Data Definition Language
DML stands for Data Manipulation Language
DDL is used to create, modify or delete database objects like tables, indexes, etc.
DML is used to manipulate data within those objects like inserting, updating, deleting data
Examples of DDL statements are CREATE, ALTER, DROP
Exa...
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I applied via Naukri.com and was interviewed in Nov 2020. There were 4 interview rounds.
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