To describe a table in PostgreSQL which of the following is correct:
psql> \d table_name
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psql> DESCRIBE table_name
psql> describe table_name
psql> \D table_name
Tag: PostgreSQL MCQs
The core PostgreSQL source code includes what interfaces?
The core PostgreSQL source code includes what interfaces?
The C and embedded C interfaces
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VB and VB.NET interfaces
C++ and Java interfaces
Ruby and PHP interfaces
Unless you specify NOT NULL, PostgreSQL will assume that a column is:
Unless you specify NOT NULL, PostgreSQL will assume that a column is:
Optional
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Required
Integers
Text
A VACUUM operation is used:
A VACUUM operation is used:
All options are correct
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To recover or reuse disk space occupied by updated or deleted rows
To protect against loss of very old data due to transaction ID wraparound.
To update data statistics used by the PostgreSQL query planner.
If you don’t specify ASC or DESC, PostgreSQL will assume you want to see results:
If you don’t specify ASC or DESC, PostgreSQL will assume you want to see results:
in ascending order
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grouped together by field type
in a random order
in descending order
PostgreSQL has many modern features including:
PostgreSQL has many modern features including:
All options are correct
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Complex SQL queries
SQL Sub-selects
Views
If you don’t specify ASC or DESC, PostgreSQL will assume you want to see results:
If you don’t specify ASC or DESC, PostgreSQL will assume you want to see results:
in ascending order
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grouped together by field type
in a random order
in descending order
PostgreSQL is
PostgreSQL is
An open-source ORDBMS developed at UC Berkley, which supports many modern features.
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Enterprise-class proprietary software developed at Bell Labs, with a basic set of features.
A NoSQL solution.
An open-source SMTP server.
PostgreSQL is
PostgreSQL is
a relational database management system.
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a hierarchical database management system.
a network-type database management system.
an XML database management system.
The most common method to get data into a table is to use what command?
The most common method to get data into a table is to use what command?
Insert
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Write
Execute
Send