accessing databases with jdbc - Core Servlets and JavaServer Pages
... written in the Java programming language into the native format required by the server. This approach means that you have to obtain a JDBC driver specific to the database you are using and that you will need to check the vendor’s documentation for the fully qualified class name to use. In principle, ...
... written in the Java programming language into the native format required by the server. This approach means that you have to obtain a JDBC driver specific to the database you are using and that you will need to check the vendor’s documentation for the fully qualified class name to use. In principle, ...
download
... and control files have not been checkpointed with respect to the same SCN. For example, one datafile header may contain an SCN of 100 while others contain an SCN of 95. Oracle will not open the database until these SCNs are made consistent, i.e., until all changes recorded in the online redo logs ha ...
... and control files have not been checkpointed with respect to the same SCN. For example, one datafile header may contain an SCN of 100 while others contain an SCN of 95. Oracle will not open the database until these SCNs are made consistent, i.e., until all changes recorded in the online redo logs ha ...
IBM DB2 courses, Universidad Cenfotec
... Describe the calculation of prefetch size when PREFETCHSIZE is set to AUTOMATIC List the advantages of selecting DMS or SMS table space management as well as using Automatic Storage-managed table spaces Set file system caching options for table spaces to optimize table space performance Describe the ...
... Describe the calculation of prefetch size when PREFETCHSIZE is set to AUTOMATIC List the advantages of selecting DMS or SMS table space management as well as using Automatic Storage-managed table spaces Set file system caching options for table spaces to optimize table space performance Describe the ...
Databases eng File - I3CT - ICT e
... on the previous requests, can contain imperfections which must be removed before the implementation. • The process by which the existing schema is modified is called normalisation • Normalisation is based on the concept of normal forms • They are divided into normal forms: first normal form, second ...
... on the previous requests, can contain imperfections which must be removed before the implementation. • The process by which the existing schema is modified is called normalisation • Normalisation is based on the concept of normal forms • They are divided into normal forms: first normal form, second ...
13. Query Optimization
... 5. Theta-join operations (and natural joins) are commutative. E1 E2 = E2 E1 6. (a) Natural join operations are associative: (E1 ...
... 5. Theta-join operations (and natural joins) are commutative. E1 E2 = E2 E1 6. (a) Natural join operations are associative: (E1 ...
larger block size
... • E-business modules further increase the exposure of poor performance • ERP-based applications inherently tend to be the most transaction – and throughput – intensive of your entire portfolio ...
... • E-business modules further increase the exposure of poor performance • ERP-based applications inherently tend to be the most transaction – and throughput – intensive of your entire portfolio ...
Greenplum Database 4.3 Client Tools for Windows
... Install a copy of the Kerberos configuration file krb5.conf from the Greenplum Database master. The file is used by the Greenplum Database client software and the Kerberos utilities. Rename krb5.conf to krb5.ini and move it to the Windows directory. On Windows 7, the Windows directory is C:\Windows. ...
... Install a copy of the Kerberos configuration file krb5.conf from the Greenplum Database master. The file is used by the Greenplum Database client software and the Kerberos utilities. Rename krb5.conf to krb5.ini and move it to the Windows directory. On Windows 7, the Windows directory is C:\Windows. ...
Chapter 14: Query Optimization
... when E1 is generated from E2 by an equivalence rule, usually only the top level of the two are different, subtrees below are the same and can be shared using pointers ...
... when E1 is generated from E2 by an equivalence rule, usually only the top level of the two are different, subtrees below are the same and can be shared using pointers ...
Chapter 17: Parallel Databases
... Different queries / transactions execute in parallel with one another Increases transaction throughput ...
... Different queries / transactions execute in parallel with one another Increases transaction throughput ...
DATABASE DEPENDENCIES
... the case of a tuple-generating dependency, new tuples are added in a minimal way until the dependency is satisfied (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied ...
... the case of a tuple-generating dependency, new tuples are added in a minimal way until the dependency is satisfied (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied ...
HPE Vertica 7.1.x Concepts Guide
... K-safety is a measure of fault tolerance in the database cluster. The value K represents the number of replicas of the data in the database that exist in the database cluster. These replicas allow other nodes to take over for failed nodes, allowing the database to continue running while still ensuri ...
... K-safety is a measure of fault tolerance in the database cluster. The value K represents the number of replicas of the data in the database that exist in the database cluster. These replicas allow other nodes to take over for failed nodes, allowing the database to continue running while still ensuri ...
The Design, Implementation, and Performance of the V2 Temporal
... particular document was stored. In order to efficiently manage the temporal versions, a temporal document database system should be employed. In this paper, we describe an approach to temporal document storage, which we have implemented in the V2 temporal document database system. Important topics ...
... particular document was stored. In order to efficiently manage the temporal versions, a temporal document database system should be employed. In this paper, we describe an approach to temporal document storage, which we have implemented in the V2 temporal document database system. Important topics ...
EPICS Version 4 Development Plan
... made with APS. EPICS release shows up in 1991 with process database rewritten to clarify the interface to hardware and new record types. Channel access continues to mature. Data types in Channel Access stay the same. Record structure stays the same – flat records with metadata in an imperfect state. ...
... made with APS. EPICS release shows up in 1991 with process database rewritten to clarify the interface to hardware and new record types. Channel access continues to mature. Data types in Channel Access stay the same. Record structure stays the same – flat records with metadata in an imperfect state. ...
primary key
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
ppt
... when E1 is generated from E2 by an equivalence rule, usually only the top level of the two are different, subtrees below are the same and can be shared using pointers ...
... when E1 is generated from E2 by an equivalence rule, usually only the top level of the two are different, subtrees below are the same and can be shared using pointers ...
Data Guard SQL Apply - Oracle Software Downloads
... control file as well as any other parameters with pathnames in them, as usual. You MUST create a password file for the standby now otherwise redo transport will not be able to function. As usual you must also have a listener for this standby up and running and the appropriate TNSNAMES definitions on ...
... control file as well as any other parameters with pathnames in them, as usual. You MUST create a password file for the standby now otherwise redo transport will not be able to function. As usual you must also have a listener for this standby up and running and the appropriate TNSNAMES definitions on ...
Nested Relational Databases
... store the part information must be traversed very quickly in order to display the part on the user's screen within an acceptable response time. Hundreds or thousands of join operations are required to display a complex part. These joins simply cannot be performed fast enough to provide acceptable di ...
... store the part information must be traversed very quickly in order to display the part on the user's screen within an acceptable response time. Hundreds or thousands of join operations are required to display a complex part. These joins simply cannot be performed fast enough to provide acceptable di ...
Chapter A: Network Model
... For queries in which a field value must be matched with a specified range of ...
... For queries in which a field value must be matched with a specified range of ...
Document
... In the case where we delete information in only some of the columns, null values, specified by –, are inserted. Delete customer Smith ...
... In the case where we delete information in only some of the columns, null values, specified by –, are inserted. Delete customer Smith ...
1. Introduction to SQL Tuning
... Ø Memory Processes - You must understand the purpose of the shared pool and database buffer cache. Ø Database Objects - It is not possible to tune an SQL statement without understanding indexes! Data storage in tables or clusters can also have an effect. Ø Access Paths - The Oracle optimizer can cho ...
... Ø Memory Processes - You must understand the purpose of the shared pool and database buffer cache. Ø Database Objects - It is not possible to tune an SQL statement without understanding indexes! Data storage in tables or clusters can also have an effect. Ø Access Paths - The Oracle optimizer can cho ...
Access to databases (JDBC)
... • executeQuery: To execute SELECT SQL instructions • executeUpdate: To execute INSERT, UPDATE, DELETE SQL instructions • execute: More general method that can be used to execute any SQL instruction. In practice it is used when a SQL instruction may return multiple results • executeBatch: Submits a b ...
... • executeQuery: To execute SELECT SQL instructions • executeUpdate: To execute INSERT, UPDATE, DELETE SQL instructions • execute: More general method that can be used to execute any SQL instruction. In practice it is used when a SQL instruction may return multiple results • executeBatch: Submits a b ...
Best Practices IBMr Building a Recovery Strategy for an
... This paper is targeted at those involved in planning, configuring, designing, implementing, or administering a data warehouse based on DB2® Database for Linux®, UNIX, and Windows® software. In particular, this paper focuses on the IBM ®Smart Analytics System environment with configurations based on ...
... This paper is targeted at those involved in planning, configuring, designing, implementing, or administering a data warehouse based on DB2® Database for Linux®, UNIX, and Windows® software. In particular, this paper focuses on the IBM ®Smart Analytics System environment with configurations based on ...
Computing with Java:
... For small applications, we can use files to store data, but as the amount of data that we need to save gets larger the services of a database system become invaluable. A database system allows us to model the information we need while it handles the details of inserting, removing, and retrieving dat ...
... For small applications, we can use files to store data, but as the amount of data that we need to save gets larger the services of a database system become invaluable. A database system allows us to model the information we need while it handles the details of inserting, removing, and retrieving dat ...
Chapter 3
... result is a relation on schema R S which is obtained by considering each pair of tuples tr from r and ts from s. If tr and ts have the same value on each of the attributes in R S, a tuple t is added to the result, where t has the same value as tr on r ...
... result is a relation on schema R S which is obtained by considering each pair of tuples tr from r and ts from s. If tr and ts have the same value on each of the attributes in R S, a tuple t is added to the result, where t has the same value as tr on r ...