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When to use storage class and datatype in SQLite?
And so for the most part, “storage class” is indistinguishable from “datatype” and the two terms can be used interchangeably. Any column in an SQLite version 3 database, except an INTEGER PRIMARY KEY column, may be used to store a value of any storage class.
Are there limits to how much memory SQLite can use?
Of course, every program that runs on a machine with finite memory and disk space has limits of some kind. But in SQLite, those limits were not well defined. The policy was that if it would fit in memory and you could count it with a 32-bit integer, then it should work.
How to check the disk usage of a SQLite table?
It is possible to get details about all the pages used by each table or index from the dbstat table, and it is also possible to aggregate that to get the disk usage of each table or index. I ran into issues with the other answers here (namely sqlite_analyzer not working on Linux).
How does the dynamic type system work in SQLite?
Datatypes In SQLite. In SQLite, the datatype of a value is associated with the value itself, not with its container. The dynamic type system of SQLite is backwards compatible with the more common static type systems of other database engines in the sense that SQL statements that work on statically typed databases should work the same way in SQLite.
How to create a new SpatiaLite layer in QGIS?
Find the button to create a new layer and use the dropdown to create a new new Spatialite layer, or select Layer –> New –> New Spatialite Layer. Select the database we created in the previous steps in the drop down. Give the layer the name places. Tick the checkbox next to Create an auto-incrementing primary key.
What kind of database is used in QGIS?
While PostGIS is generally used on a server to provide spatial database capabilities to multiple users at the same time, QGIS also supports the use of a file format called spatialite that is a lightweight, portable way to store an entire spatial database in a single file.