As described herein, a system, method, and computer program are provided for preventing user mistakes when making database changes. In use, a user command to modify a database is received. The user command is validated against a plurality of predefined business rules. One or more actions are conditionally performed before executing the user command, based on a result of the validating.

Embodiments allow a primary database system (“primary”) to automatically detect queries directed to the primary database that may be offloaded to a standby database system (“standby”), and then to automatically offload the offload-eligible queries to a standby. The primary identifies offload-eligible queries based on a record of up-to-date database objects within each standby that replicates the primary database. The record of up-to-date standby objects is updated based on heartbeat messages from each standby, and commit timestamps for transactions on the primary. Evaluation of whether a query is offload-eligible is triggered by one or more trigger conditions that include: inclusion of an offload optimizer hint in the query, an estimated run-time of the query, etc. Embodiments further allow an offloaded query over particular changed data in the primary database to access, on a standby database, uncommitted changes made to the particular data in the primary database.

A system and method of joining remote tables by a federated server is provided. A method includes receiving a data join request from a client device; sending a first block fetch request to a first data source based on the data join request; receiving a first set of block data from the first data source; sending a second block fetch request to a second data source based on the data join request and a bind array containing the data of join column in the first data source; receiving a second set of block data from the second data source; and sending an output to the client device in response to the data join request in the form of rows from an outer table and an inner table.

A system and method of joining remote tables by a federated server is provided. A method includes receiving a data join request from a client device; sending a first block fetch request to a first data source based on the data join request; receiving a first set of block data from the first data source; sending a second block fetch request to a second data source based on the data join request and a bind array containing the data of join column in the first data source; receiving a second set of block data from the second data source; and sending an output to the client device in response to the data join request in the form of rows from an outer table and an inner table.

A method for generating a database uses a first data structure including elements, where the method includes generating a second data structure using the first data structure. The second data structure corresponds to a Logical Data Model, and is mapped to the elements of the first data structure. The method further includes generating a third data structure using the second data structure, where the third data structure corresponds to a Physical Data Model. The method further includes generating the database using the third data structure.

Methods, apparatuses and computer program products for improving data retrieval in a group-based communication system are described herein. The apparatus is configured to at least receive a first search query comprising a first search string, identify a first index object of a plurality of index objects based at least in part on the first search string, retrieve a first message object based at least in part on the first index object, and cause rendering of the first message object within a group-based communication user interface on a client device based at least in part on at least one element content attribute and at least one element style attribute of the first message object.

Methods, apparatuses and computer program products for improving data retrieval in a group-based communication system are described herein. The apparatus is configured to at least receive a first search query comprising a first search string, identify a first index object of a plurality of index objects based at least in part on the first search string, retrieve a first message object based at least in part on the first index object, and cause rendering of the first message object within a group-based communication user interface on a client device based at least in part on at least one element content attribute and at least one element style attribute of the first message object.

A server connected to a network generates a database including a first data structure configured to store attributes of fungible assets, where the attributes determine market values of the fungible assets, and a second data structure having fields referentially related to the attributes stored in the first data structure such that a change in any one of the fields induces a change in real time in a corresponding attribute in the first data structure. The server receives a stream of data regarding one or more of the attributes of the fungible assets from the network, which modifies one or more of the fields of the second data structure, and which allows at least one of cycling, liquidating, and replenishing of one or more of the fungible assets while maintaining a relative value equivalence of the fungible assets.

A server connected to a network generates a database including a first data structure configured to store attributes of fungible assets, where the attributes determine market values of the fungible assets, and a second data structure having fields referentially related to the attributes stored in the first data structure such that a change in any one of the fields induces a change in real time in a corresponding attribute in the first data structure. The server receives a stream of data regarding one or more of the attributes of the fungible assets from the network, which modifies one or more of the fields of the second data structure, and which allows at least one of cycling, liquidating, and replenishing of one or more of the fungible assets while maintaining a relative value equivalence of the fungible assets.

A device may identify a query for a database system, wherein the query is a candidate for optimization. The device may determine a first execution plan according to a first hint for executing the query and a second execution plan according to a second hint for executing the query, wherein the first execution plan is associated with a first execution time and the second execution plan is associated with a second execution time. The device may select the first execution plan or the second execution plan as a selected execution plan. The device may generate, based on selecting the selected execution plan, a profile for the query, wherein the profile is based on the selected execution plan. The database system may execute the query according to the profile.