Database creation and/or reorganization over multiple database
... In order to create a record in databases, an ...
... In order to create a record in databases, an ...
Database Constraints
... The syntax of the primary key constraint (following the Constraint keyword and the constraint name, if they're specified) is – Primary Key( column-name, ... ) – Each primary key column's definition must include Not Null. – For a table with a primary key constraint, UDB/400 blocks any attempt to inse ...
... The syntax of the primary key constraint (following the Constraint keyword and the constraint name, if they're specified) is – Primary Key( column-name, ... ) – Each primary key column's definition must include Not Null. – For a table with a primary key constraint, UDB/400 blocks any attempt to inse ...
Performant Data Loading with Oracle Database 12c
... Users should provide an external shared storage for the staging files. We refer to it as shared storage since on a system running Real Application Clusters (RAC) the storage has to be accessible from all cluster nodes. The IO throughput of the shared storage has a direct impact on the load speed: yo ...
... Users should provide an external shared storage for the staging files. We refer to it as shared storage since on a system running Real Application Clusters (RAC) the storage has to be accessible from all cluster nodes. The IO throughput of the shared storage has a direct impact on the load speed: yo ...
Tenant ID" column for Multi
... forward) with the exception of index rebuild. Index rebuild of tenant local indexes is allowed while the database is online. The tenant whose indexes are being rebuilt are offline until the process completes, but other tenants of the database are not affected and can continue towork actively with th ...
... forward) with the exception of index rebuild. Index rebuild of tenant local indexes is allowed while the database is online. The tenant whose indexes are being rebuilt are offline until the process completes, but other tenants of the database are not affected and can continue towork actively with th ...
SQL Pass-Through and the ODBC Interface
... Server®, MySQL™, Sybase®, IBM® Informix®, Teradata®, Oracle®, and Microsoft® Access® databases. Each RDBMS has its own native dialect of Structured Query Language (SQL). SQL can also be used within SAS by invoking the SQL Procedure. Open Database Connectivity (ODBC), which was designed to access rel ...
... Server®, MySQL™, Sybase®, IBM® Informix®, Teradata®, Oracle®, and Microsoft® Access® databases. Each RDBMS has its own native dialect of Structured Query Language (SQL). SQL can also be used within SAS by invoking the SQL Procedure. Open Database Connectivity (ODBC), which was designed to access rel ...
Relational Database Management System
... a. Redo log files; data files, control files b. Table space, segment, extent c. None of these Ans. A 70. There are four types of methods. a. Member, static, constructor, comparison b. Data file, redo log files, control files c. None of these Ans. A 71. There are _______ different types of fragmentat ...
... a. Redo log files; data files, control files b. Table space, segment, extent c. None of these Ans. A 70. There are four types of methods. a. Member, static, constructor, comparison b. Data file, redo log files, control files c. None of these Ans. A 71. There are _______ different types of fragmentat ...
Database Tuning Principles, Experiments and Troubleshooting
... SQL Server 7, DB2 v7.1 and Oracle 8i on Windows 2000 No lock escalation on Oracle; Parameter set so that there is no lock escalation on DB2; no control on SQL Server. ...
... SQL Server 7, DB2 v7.1 and Oracle 8i on Windows 2000 No lock escalation on Oracle; Parameter set so that there is no lock escalation on DB2; no control on SQL Server. ...
(A) write_item (B)
... To bring the database into the last consistent state, which existed prior to the failure. • To preserve transaction properties (Atomicity, Consistency, Isolation and Durability). Example: If the system crashes before a fund transfer transaction completes its execution, then either one or both accoun ...
... To bring the database into the last consistent state, which existed prior to the failure. • To preserve transaction properties (Atomicity, Consistency, Isolation and Durability). Example: If the system crashes before a fund transfer transaction completes its execution, then either one or both accoun ...
Calling Stored Procedures from RulePoint
... You want to update a department table in an Oracle database based on the fetched employee information. The process involves extracting the employee records from the source. For each record that you want to fetch, execute the stored procedure to update the department tables. To execute a stored proce ...
... You want to update a department table in an Oracle database based on the fetched employee information. The process involves extracting the employee records from the source. For each record that you want to fetch, execute the stored procedure to update the department tables. To execute a stored proce ...
A Modular Query Optimizer Architecture for Big Data - CMU 15-721
... Processing analytics queries on Hadoop is becoming increasingly popular. Initially, the queries were expressed as MapReduce jobs and the Hadoop’s appeal was attributed to its scalability and fault-tolerance. Coding, manually optimizing and maintaining complex queries in MapReduce though is hard, thu ...
... Processing analytics queries on Hadoop is becoming increasingly popular. Initially, the queries were expressed as MapReduce jobs and the Hadoop’s appeal was attributed to its scalability and fault-tolerance. Coding, manually optimizing and maintaining complex queries in MapReduce though is hard, thu ...
SQLDA - Binus Repository
... variables or SELECT list columns. For placeholders, lengths must be set prior to OPEN; for SELECT list columns, DESCRIBE sets maximum length for each column value, which can be modified. ...
... variables or SELECT list columns. For placeholders, lengths must be set prior to OPEN; for SELECT list columns, DESCRIBE sets maximum length for each column value, which can be modified. ...
Chapter 10_Database_Space_Management
... Oracle stores a database's data dictionary in the SYSTEM tablespace. As Chapter 7 states, a database's data dictionary is a set of internal system tables that stores information about the database itself. A database's data dictionary also includes other objects that Oracle uses for internal system p ...
... Oracle stores a database's data dictionary in the SYSTEM tablespace. As Chapter 7 states, a database's data dictionary is a set of internal system tables that stores information about the database itself. A database's data dictionary also includes other objects that Oracle uses for internal system p ...
The Design of a Robust Persistence Layer For Relational
... allowed to send messages to classes within the system layer and the persistence layer. The persistence layer encapsulates the behavior needed to store objects in persistence mechanisms such as object databases, files, and relational databases. By conforming to this class-type architecture the robust ...
... allowed to send messages to classes within the system layer and the persistence layer. The persistence layer encapsulates the behavior needed to store objects in persistence mechanisms such as object databases, files, and relational databases. By conforming to this class-type architecture the robust ...
Query-by-Example (QBE)
... Attributes of relations are listed vertically, one below the other, instead of horizontally Instead of using variables, lines (links) between attributes are used to specify that their values should be the same. Links are added automatically on the basis of attribute name, ...
... Attributes of relations are listed vertically, one below the other, instead of horizontally Instead of using variables, lines (links) between attributes are used to specify that their values should be the same. Links are added automatically on the basis of attribute name, ...
Entity Sets
... two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. ...
... two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. ...
Automating the Documentation of Oracle Clinical Database Specifications
... It is expected that a CDMS would provide adequate reporting on its own database structures. While most systems do provide some reports, experience has shown that organizations need a highly customized report of database specifications that produces concise and meaningful documentation that integrate ...
... It is expected that a CDMS would provide adequate reporting on its own database structures. While most systems do provide some reports, experience has shown that organizations need a highly customized report of database specifications that produces concise and meaningful documentation that integrate ...
Migrating to Virtual Data Marts using Data Virtualization
... performance is commonly used as the all‐overriding argument. Unfortunately, data marts are more expensive than most organizations think. Already in 2008, Gartner2 indicated that the costs of derived data stores, such as data marts, are expensive components of an ...
... performance is commonly used as the all‐overriding argument. Unfortunately, data marts are more expensive than most organizations think. Already in 2008, Gartner2 indicated that the costs of derived data stores, such as data marts, are expensive components of an ...
Relational Algebra - Philadelphia University
... Unary Relational Operations (cont.) Rename Operation We may want to apply several relational algebra operations one after the other. Either we can write the operations as a single relational algebra expression by nesting the operations, or we can apply one operation at a time and create intermedi ...
... Unary Relational Operations (cont.) Rename Operation We may want to apply several relational algebra operations one after the other. Either we can write the operations as a single relational algebra expression by nesting the operations, or we can apply one operation at a time and create intermedi ...
Fundamentals of Database Systems
... application program (as opposed to interactive interfaces) An interactive interface is convenient but not sufficient; a majority of database operations are made thru application programs (nowadays thru web applications) ...
... application program (as opposed to interactive interfaces) An interactive interface is convenient but not sufficient; a majority of database operations are made thru application programs (nowadays thru web applications) ...
Oracle Data Integrator Best Practices for a Data Warehouse
... transform data and are usually described in natural language by business users. In a typical data integration project (such as a Data Warehouse project), these rules are defined during the specification phase in documents written by business analysts in conjunction with project managers. Business Ru ...
... transform data and are usually described in natural language by business users. In a typical data integration project (such as a Data Warehouse project), these rules are defined during the specification phase in documents written by business analysts in conjunction with project managers. Business Ru ...
Self-optimizing native object database for a dynamic
... Object oriented software development is the main choice when developing business software today. For distributed storage of data they mostly use relational databases. The relational model however is not fully natural from an object oriented development perspective. The natural selection would be to ...
... Object oriented software development is the main choice when developing business software today. For distributed storage of data they mostly use relational databases. The relational model however is not fully natural from an object oriented development perspective. The natural selection would be to ...
Effective Keyword Based Selection of Relational Databases
... measured as a combination of two factors: 1) Proximity factor – Inverse of distance 2) Frequency factor, given a distance d – Number of combinations of exactly d+1 distinct tuples that can be joined in a sequence to get the two keywords in the ...
... measured as a combination of two factors: 1) Proximity factor – Inverse of distance 2) Frequency factor, given a distance d – Number of combinations of exactly d+1 distinct tuples that can be joined in a sequence to get the two keywords in the ...