摘要:
A temporary system is described to provide, during an upgrade of an application implemented using an original system, a continuous access to the application. A copy of a first data-set characterizing a first version of the application is generated on the temporary system when the upgrade becomes available. A selective access to the copy on the temporary system is enabled while preventing access to the first data-set on an original system. The first data-set on the original system is upgraded to form a second data-set characterizing a second version of the application, and a testing of the second data-set is performed. When a result of the testing indicates that the second data-set should be implemented, an access to the second data-set on the original system is enabled while preventing access to the copy on the temporary system. Related methods, apparatus, systems, techniques and articles are also described.
摘要:
The subject matter described herein relates to providing a continuous access to a database at times, including when the database is being modified or upgraded. Initially, access to an old version of a table is enabled and provided to a user. A copy of the old version is generated. Access is asynchronously redirected from the old version to the copy of the old version. A new version of the table is generated by modifying the structure of the first version of the table. The copy of the old version is accessible when the database is being modified or upgraded. When the structure is being modified, access is asynchronously redirected from the copy of the old version to the new version.
摘要:
Continuous access to an application and associated data is provided during a modification (for example, an upgrade) of the application. Shared tables are used to perform parallel changes in databases associated with an original database schema, a temporary database schema, and an upgraded database schema. Aliases are used to access shared tables from some database schemas. The use of shared tables obviates a separate merging of data written by different tools and/or systems during an upgrade of the application. Related methods, apparatuses, systems, techniques and articles are also described.
摘要:
A temporary system is described to provide, during an upgrade of an application implemented using an original system, a continuous access to the application. A copy of a first data-set characterizing a first version of the application is generated on the temporary system when the upgrade becomes available. A selective access to the copy on the temporary system is enabled while preventing access to the first data-set on an original system. The first data-set on the original system is upgraded to form a second data-set characterizing a second version of the application, and a testing of the second data-set is performed. When a result of the testing indicates that the second data-set should be implemented, an access to the second data-set on the original system is enabled while preventing access to the copy on the temporary system. Related methods, apparatus, systems, techniques and articles are also described.
摘要:
The subject matter described herein relates to providing a continuous access to a database at times, including when the database is being modified or upgraded. Initially, access to an old version of a table is enabled and provided to a user. A copy of the old version is generated. Access is asynchronously redirected from the old version to the copy of the old version. A new version of the table is generated by modifying the structure of the first version of the table. The copy of the old version is accessible when the database is being modified or upgraded. When the structure is being modified, access is asynchronously redirected from the copy of the old version to the new version.
摘要:
Continuous access to an application and associated data is provided during a modification (for example, an upgrade) of the application. Shared tables are used to perform parallel changes in databases associated with an original database schema, a temporary database schema, and an upgraded database schema. Aliases are used to access shared tables from some database schemas. The use of shared tables obviates a separate merging of data written by different tools and/or systems during an upgrade of the application. Related methods, apparatuses, systems, techniques and articles are also described.
摘要:
The present disclosure describes methods, systems, and computer program products for providing multi-level user interface theming. One computer-implemented method includes instantiating a shadow system and database schema for a new version software application in a shared database, the shadow system database schema containing aliases pointing to tables instantiated in a production database schema, instantiating a bridge database schema containing aliases pointing to each database table within the production database schema, preparing a bridge sub-system connected to the bridge database schema aliases, replicating database tables within the production database schema, for use by the bridge sub-system and adjusting the original database tables for structure and content consistent with the new version software application, deploying an upgrade sub-system and tools to complete adjustment of structure and content of the original database tables, and connecting an instantiated instance of the new version software application to adjusted database tables.
摘要:
The present disclosure describes methods, systems, and computer program products for providing multi-level user interface theming. One computer-implemented method includes instantiating a shadow system and database schema for a new version software application in a shared database, the shadow system database schema containing aliases pointing to tables instantiated in a production database schema, instantiating a bridge database schema containing aliases pointing to each database table within the production database schema, preparing a bridge sub-system connected to the bridge database schema aliases, replicating database tables within the production database schema, for use by the bridge sub-system and adjusting the original database tables for structure and content consistent with the new version software application, deploying an upgrade sub-system and tools to complete adjustment of structure and content of the original database tables, and connecting an instantiated instance of the new version software application to adjusted database tables.
摘要:
Revocation of a zero downtime upgrade of an upgrade procedure of a source system to a target system is initiated. Thereafter, upgrade activities are stopped at the target system and production activities are stopped at the source system. At least a portion of the target tables can be subsequently dropped and any associated table structure changes can be revoked. At least a portion of the target tables are then switched from use by the target system to use by the source system. Next, the source system is connected to the source database schema to enable use of the source system in its state prior to the initiation of the upgrade procedure. Related apparatus, systems, techniques and articles are also described.
摘要:
Techniques for migrating data in a database include identifying an update to one or more data entries of a source table; determining that a status of a trigger associated with the source table indicates to update a logging table, and in response: updating, in a first transaction, (i) the one or more data entries of the source table, and (ii) one or more data entries of the logging table based on the user input, and copying content of the source table to a target table; and determining that the status indicates to update the target table, and in response: updating, in a second transaction, (i) the one or more data entries of the source table and (ii) one or more data entries of the target table based on the user input, and updating the content of the target table based on the one or more data entries of the logging table.