Abstract: The subject matter of this disclosure can be implemented in, among other things, a device that includes processors, a data repository, and a table version module configured to create a first version of a database within the data repository using a first version of a database schema that defines a set of tables for the database, and receive a result that is responsive to a command, such that when the result indicates a success condition, execution of the command allows access to data contained in the database and verification of the database schema version, wherein the result does not include database schema version information. The device further includes means for executing the command to access the data, wherein the command includes one or more encoded table names, and wherein each of the encoded table names included in the command is generated based on at least a database schema version identifier.

Abstract: A request to update a list of conversations is sent to a server. At least a portion of each conversation in the list of conversations is stored on the client. A plurality of updates is received form the server. The plurality of updates includes messages corresponding to respective conversations in the list of conversations.

Abstract: The techniques of this disclosure are directed to a shared worker application configured to create one or more instantiations and/or to locally synchronize status of one or more sub-component instantiations for one or more web applications. In one example, a shared worker of a browser facilitates creation of sub-component instantiations, by acquiring software defining the sub-component from a memory of a computing device on which the browser is operating, or via a network, and providing the software local to the computing device for execution to create the instantiation of the sub-component. In another example, a shared worker of a browser as described herein facilitates status updates for multiple sub-component instantiations local to a computing device upon which a browser is operating.

Abstract: The techniques of this disclosure are directed to a shared worker application configured to create one or more instantiations and/or to locally synchronize status of one or more sub-component instantiations for one or more web applications. In one example, a shared worker of a browser facilitates creation of sub-component instantiations, by acquiring software defining the sub-component from a memory of a computing device on which the browser is operating, or via a network, and providing the software local to the computing device for execution to create the instantiation of the sub-component. In another example, a shared worker of a browser as described herein facilitates status updates for multiple sub-component instantiations local to a computing device upon which a browser is operating.

Abstract: The subject matter of this disclosure can be implemented in, among other things, a device that includes processors, a data repository, and a table version module configured to create a first version of a database within the data repository using a first version of a database schema that defines a set of tables for the database, and receive a result that is responsive to a command, such that when the result indicates a success condition, execution of the command allows access to data contained in the database and verification of the database schema version, wherein the result does not include database schema version information. The device further includes means for executing the command to access the data, wherein the command includes one or more encoded table names, and wherein each of the encoded table names included in the command is generated based on at least a database schema version identifier.

Abstract: The subject matter of this disclosure can be implemented in, among other things, a device that includes processors, a data repository, and a table version module configured to create a first version of a database within the data repository using a first version of a database schema that defines a set of tables for the database, and receive a result that is responsive to a command, such that when the result indicates a success condition, execution of the command allows access to data contained in the database and verification of the database schema version, wherein the result does not include database schema version information. The device further includes means for executing the command to access the data, wherein the command includes one or more encoded table names, and wherein each of the encoded table names included in the command is generated based on at least a database schema version identifier.