When printing this page, you must include the entire legal notice. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use. APA American Psychological Association style is most commonly used to cite sources within the social sciences.
Direct use means the ability to access and update data in a "native" storage format without intermediate format translations in an environment e.
GeoPackages are interoperable across all enterprise and personal computing environments, and are particularly useful on mobile devices like cell phones and tablets in communications environments with limited connectivity and bandwidth.
Keywords ogcdoc, geopackage, sqlite, raster, tiles, vector, feature, data, storage, exchange, mobile, smartphone, tablet Introduction A GeoPackage is an open, standards-based, platform-independent, portable, self-describing, compact format for transferring geospatial information.
The required and supported content of a GeoPackage is entirely defined in the standard. These capabilities are built on a common base and the extension mechanism provides implementors a way to include additional functionality in their GeoPackages.
Since a GeoPackage is a database container, it supports direct use. This means that the data in a GeoPackage can be accessed and updated in a "native" storage format without intermediate format translations.
GeoPackages that comply with the requirements in the standard and do not implement vendor-specific extensions are interoperable across all enterprise and personal computing environments.
GeoPackages are particularly useful on mobile devices such as cell phones and tablets in communications environments where there is limited connectivity and bandwidth.
This standard is intended to facilitate widespread adoption and use of GeoPackages by both COTS and open-source software applications on enterprise production platforms as well as mobile hand-held devices [B1] [B2]given that mobile hand held devices do not yet have the processing power or battery life to effectively tackle difficult geospatial product production and analysis tasks.
An Extended GeoPackage is a GeoPackage that contains any additional data elements tables or columns or SQL constructs views, data types, functions, indexes, constraints or triggers that are not automatically maintained within the SQLite data file or that result in a change in behavior not specified in this encoding standard.
GeoPackage metadata CAN describe GeoPackage data contents and identify external data synchronization sources and targets. This standard does not address the issues listed in the Potential Future Work Informative clause in Background and Context Normativewhich MAY be addressed in a subsequent version of this standard or by other specifications.
GeoPackage Tables Overview 1.
Base The required capabilities specified in this clause serve as the base for options specified in clause Options and extensions specified in clause Registered Extensions Normative. Any features user data tables MAY have columns in addition to those specified. Using SQLite as the basis for GeoPackage simplifies production, distribution and use of GeoPackages and assists in guaranteeing the integrity of the data they contain.
For GeoPackage Version 1. In practice a lower size limit MAY be imposed by the filesystem to which the file is written. Many mobile devices require external memory cards to be formatted using the FAT32 file system which imposes a maximum size limit of 4GB.
The GeoPackage designation is designed to provide maximum interoperability between applications. In an Extended GeoPackage, the extension mechanism is used to provide additional capabilities in a way that maintains interoperability as much as possible.
Developers are encouraged to consider the implications of extensions when designing their applications. Best practices include the following: Designing in a way that anticipates the presence of unexpected extensions, e. Using the WKT for Coordinate Reference Systems extension, which is strongly recommended due to inherent weaknesses in the original standard for encoding coordinate reference systems.
Now supports 7th edition of MLA. A person specification covers off on the experience, qualifications, skills, knowledge, abilities, personal attributes, physical qualities, behaviours and competencies that are .
Person specification [31kb] - a breakdown of the attributes the employer is looking for and whether they should be essential or desirable. Job application forms Job application form - option 1 [15kb] - a form covering the basics. Establish Business Rules for Contingencies and Responsibilities “The best-laid plans of mice and men ” begins the famous saying.
It has direct application to writing software requirements specifications because even the most thought-out requirements are not immune to changes in industry, market, or government regulations.
Notation [Definition: An XSLT element is an element in the XSLT namespace whose syntax and semantics are defined in this specification.] For a non-normative list of XSLT elements, see D Element Syntax Summary.
In this document the specification of each XSLT element is preceded by a summary of its syntax in the form of a model for elements of that element type.