Abstract: A computer maps a literal in a database query to a digital representation, wherein the database query comprises a predicate, the literal is a part of the predicate, and the digital representation is predetermined based at least in part on external statistical data. The computer estimates a filter factor for the predicate based at least in part on the digital representation and compressed statistical data, wherein the compressed statistical data are prepared at least in part from the external statistical data.

Abstract: Rows are inserted in a database table on a page having a first space reserved for inserting rows of the database table. A second space is reserved for updating data of the inserted rows, wherein reserving the second space includes reserving the second space on the page responsive to inserting each of the rows.

Abstract: A first compute node of a plurality of compute nodes of a database cluster may receive a request for a database transaction from a client application. The client application may be located within the first compute node. A first connection may be established, without regard to whether another compute node has a lighter workload than the first compute node, between the client application and a first database of the database cluster. The first connection may be a local connection, wherein the first database is located within the first compute node. The first compute node may detect that a failure associated with the first database has occurred. The first compute node may execute a failover operation to continue servicing the request for the data. The executing of a failover operation may include establishing a second connection between the client application and a second database of the database cluster.

Abstract: A row is inserted in a database table on a page having a first space reserved for inserting rows of the database table. A second space is reserved for adding data to the inserted row, wherein reserving the second space includes reserving the second space on the page responsive to inserting the row, so that the amount of space reserved for adding data to inserted rows grows as more rows are inserted. The page is marked full for the second space independently of whether the first space is full for inserting new rows. Data is added to rows on the page, responsive to detecting that the second space is full, by adding the data to one or more new pages, even though rows may still be inserted on the page using any remaining room in the first space on the page.

Abstract: A row is inserted in a database table on a page having a first space reserved for inserting rows of the database table. A second space is reserved for adding data to the inserted row, wherein reserving the second space includes reserving the second space on the page responsive to inserting the row.

Abstract: Exposing existing database server attributes that are used for load balancing, accounting, log filtering, problem determination, and end user identification as tenant identifiers. An example of such attribute is the values in existing client information fields that are available to applications for passing additional information to the database server via connections. These values are then used by the database server for enhanced operational functions of load balancing, accounting, log filtering, problem determination, and end user identification.

Abstract: Exposing existing database server attributes that are used for load balancing, accounting, log filtering, problem determination, and end user identification as tenant identifiers. An example of such attribute is the values in existing client information fields that are available to applications for passing additional information to the database server via connections. These values are then used by the database server for enhanced operational functions of load balancing, accounting, log filtering, problem determination, and end user identification.

Abstract: A distributed database system (or federated database system) where a catalogue is used to store metadata descriptive of data containers for the constituent database system(s) and/or accelerator system(s) of the federated database. In response to the generation of the trigger signal corresponding to a database definition language (DDL) statement, the accelerator system updates metadata in the catalogue.

Abstract: A row is inserted in a database table on a page having a first space reserved for inserting rows of the database table. A second space is reserved for adding data to the inserted row, wherein reserving the second space includes reserving the second space on the page responsive to inserting the row.

Abstract: A computer-implemented method, system, and/or computer program product monitors stored procedures that are executed in a database management system. A determination is made, for a stored procedure that is executed in a database management system, of an identification of the stored procedure and event data related to the stored procedure. The event data includes when the stored procedure began and ended executing, an SQL identifier for an SQL statement in the stored procedure, and a counter of how many times the SQL statement executed. The database management system provides values of parameters used when executing the SQL statement. These values are then correlated with the count of how many times the SQL statement executed.

Abstract: A system and method for connection of an application program to its corresponding database in a relational database system environment. Rather than embedding connection configuration information or properties in an application program, connection configurations are stored in a connection configuration repository. The connection configuration repository is likewise stored in a database within the relational database system environment. The connection configuration information stored in the configuration repository may be updated, revised, deleted or assembled into groups/subgroups, without affecting the application programs.

Abstract: A system and method for connection of an application program to its corresponding database in a relational database system environment. Rather than embedding connection configuration information or properties in an application program, connection configurations are stored in a connection configuration repository. The connection configuration repository is likewise stored in a database within the relational database system environment. The connection configuration information stored in the configuration repository may be updated, revised, deleted or assembled into groups/subgroups, without affecting the application programs.

Abstract: An apparatus, system, and method for creating and managing a data server-managed web services runtime. A generic web service runtime module and associated runtime controller are deployed on an application server. The runtime controller monitors a web services management metadata store for changes in the web service metadata defining the available data access based web services. If a change is detected, the generic web services runtime automatically updates the web service artifacts and web service endpoint interface associated with the affected web service such that the change in the web service metadata is reflected in the data access-based web service. A user manages the web services management metadata store and defines and manages data access-based web services from the database containing the web services management metadata store without interacting with the application server.

Abstract: The present invention provides a method, computer program product and article for creating and reusing a value object for data that is requested a first time and again in subsequent data requests in related result sets. Mutation directives and an associated methodology are presented in one of four different levels which permit the present invention to operate within the JDBC standard.

Abstract: An apparatus, system, and method are disclosed for efficiently supporting generic SQL data manipulation statements. The method includes determining whether an SQL statement includes extended indicator parameters such as DEFAULT and UNASSIGNED indicators. The method further includes delaying an authorization check for an operation for an SQL statement using extended indicators, and bypassing an SQL exception where an otherwise unauthorized operation involves an UNASSIGNED variable. The method further includes bypassing a database operation such as a referential integrity check where a data change would induce the database operation, but the data change involves an UNASSIGNED variable. The method further includes modifying the SQL statement when the SQL statement involves an UNASSIGNED variable in a predicate clause, allowing the SQL statement to properly execute.

Abstract: An apparatus, system, and method for creating and managing a data server-managed web services runtime. A generic web service runtime module and associated runtime controller are deployed on an application server. The runtime controller monitors a web services management metadata store for changes in the web service metadata defining the available data access based web services. If a change is detected, the generic web services runtime automatically updates the web service artifacts and web service endpoint interface associated with the affected web service such that the change in the web service metadata is reflected in the data access-based web service. A user manages the web services management metadata store and defines and manages data access-based web services from the database containing the web services management metadata store without interacting with the application server.

Abstract: The present invention provides a method, computer program product and article for creating and reusing a value object for data that is requested a first time and again in subsequent data requests in related result sets. Mutation directives and an associated methodology are presented in one of four different levels which permit the present invention to operate within the JDBC standard.