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DevOps I: Linux and Networking Fundamentals

DevOps I: Linux and Networking Fundamentals

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What is advantage of NoSQL databases over traditional relational databases?

NoSQL databases offer better support for complex joins and transactions

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NoSQL databases have a fixed schema

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NoSQL databases can handle large volumes of unstructured or semi-structured data

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NoSQL databases always provide better performance

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How does the schema flexibility of NoSQL databases impact the migration process compared to rigidly structured SQL databases?

Slows down migration due to complex schema handling

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Simplifies data mapping and migration planning

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Requires more complex schema transformations

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No impact on migration process

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What are database model types?

Hierarchical databases

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Function databases

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Relational databases

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Object-oriented databases

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Network databases

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Which SQL statement is used for retrieving data from a table?

INSERT

SELECT

UPDATE

DELETE

Which SQL statement is used for adding conditions in a query?

SELECT

WHERE

FROM

Which of the following SQL options is used for deleting records from a table?

DROP

REMOVE

DELETE

ERASE

Which of the following is used for defining the objects of a database and the database itself, including tables, columns, and data types?

CREATE

SELECT

ALTER

MODIFY

Which of the following data types is used for storing large text values in a table?

TEXT

BOOLEAN

VARCHAR

INT

What is the purpose of the SQL UPDATE statement?

To retrieve data from a table

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To create a new table

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To modify existing records in a table

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To delete records from a table

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What is a primary key in RDB?

A key used for backup purposes

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A key used for opening the database

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A unique identifier for a record in a table

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A key used for sorting records

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