View
A view is an alternate representation or access interface for data derived from or backed by underlying storage without necessarily creating an independent copy.
Fast Python: High performance techniques for large datasets
- How it is used
- Uses views to transform large image arrays while avoiding copies of their underlying data.
- How deep it goes
- Explains views through shape, byte strides, mutation, and memory-sharing checks, while deferring detailed allocation behavior.
- Examples
- Uses grayscale image flips and rotations, matrix reshaping, reversed slices, and view-versus-copy timing comparisons.
- What you can do after
- Apply it via NumPy slicing and transformations, then verify memory sharing and compare copy costs.
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Deep Learning with PyTorch, Second Edition
A tensor representation that shares underlying storage while presenting the same data with a different shape or interpretation.
- How it is used
- Uses views to reshape tensor data for daily time-series sequences and inputs to linear layers without copying compatible storage.
- How deep it goes
- Explains views through storage offsets, shapes, strides, shared mutations, cloning, and contiguity; stops short of exhaustive API coverage.
- Examples
- Works through indexed point tensors, a nine-element reshape exercise, hourly bike data grouped by day, and convolution outputs flattened for a linear layer.
- What you can do after
- Apply it via PyTorch view to reshape compatible tensors, inspect shared-storage effects, and prepare pooled features for a linear layer.
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MongoDB 8.0 in Action, Third Edition
A MongoDB view is a queryable, read-only entity whose contents are generated dynamically from an aggregation pipeline over collections or other views.
- How it is used
- Provides read-only access to filtered, simplified, reusable, or combined results from underlying data.
- How deep it goes
- Explains dynamic reads and demonstrates creation and querying, including join stages and pipeline restrictions, without detailing execution internals.
- Examples
- Uses a filtered airline-routes view and a transaction view enriched with customer details.
- What you can do after
- Build it from scratch with db.createView(), query it with find(), and avoid prohibited pipeline stages.
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Build Financial Software with Generative AI (From Scratch)
A database view is a virtual table defined by a stored query over one or more database tables.
- How it is used
- Provides a unified interface for inspecting separated raw records and troubleshooting uploaded ACH files.
- How deep it goes
- Defines the virtual-table model and demonstrates creation with joins and UNION ALL, without covering broader view management.
- Examples
- Uses the combined_ach_records view to reunite unparsed ACH record types for raw-file display and exception troubleshooting.
- What you can do after
- Operate/configure a database view that combines related tables into a convenient read interface.
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Effective Data Analysis
A view is a virtual tabular result defined by a query over one or more underlying tables.
- How it is used
- Supports analysts by exposing curated query results for generating insights from organizational data.
- How deep it goes
- Defines a view as a query-produced data structure and situates it among tables and schemas without detailing execution internals.
- Examples
- Uses a grouped state-population query to illustrate query-defined, organized analytical results.
- What you can do after
- Apply it via SQL by querying curated warehouse results instead of repeatedly assembling underlying table logic.
Related concepts
- database tablekind of · A database table is a relational database structure that organizes records into rows and defined columns.
- create view commandproduced by · CREATE VIEW is an SQL statement that defines a named database view from a query.
- copycontrasts with · Copying is the creation of a separate representation of an existing value, object, or data, preserving some or all of its contents or state.
- Flink SQLproduced by · Flink SQL is Apache Flink’s declarative SQL interface for defining queries over streaming and table-oriented data and executing them as Flink jobs.
- @viewproduced by · @view is a Julia macro that transforms an array slice expression into a non-copying view of the selected data.
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