SQL Azure Database
... • Higher availability – app still runs if server is unreachable • Reduced network utilization – most data access is local ...
... • Higher availability – app still runs if server is unreachable • Reduced network utilization – most data access is local ...
JDBC notes
... If a programmer assumes that the columns are always returned in the same order from a query that uses the asterisk (*), the program may process the result incorrectly. If the column order in the table(s) changes or if additional columns are added at a later time, the order of the columns in the resu ...
... If a programmer assumes that the columns are always returned in the same order from a query that uses the asterisk (*), the program may process the result incorrectly. If the column order in the table(s) changes or if additional columns are added at a later time, the order of the columns in the resu ...
Question: 1 Which three methods can you use to run an Automatic
... A. It is a dynamic parameter. B. It is an advanced parameter. C. It is a new parameter in Oracle 10g. D. It can have any value between8.0.0 and 10.1.0 in Oracle 10g database. E. After it is set to 10.0.0 or greater and the database is opened, it cannot be set back. Answer: E Question: 15 You are usi ...
... A. It is a dynamic parameter. B. It is an advanced parameter. C. It is a new parameter in Oracle 10g. D. It can have any value between8.0.0 and 10.1.0 in Oracle 10g database. E. After it is set to 10.0.0 or greater and the database is opened, it cannot be set back. Answer: E Question: 15 You are usi ...
Solutions
... • According to Symantec Survey, the average SMB only backs up 60% of customer data and doesn't even do that on a consistent schedule ...
... • According to Symantec Survey, the average SMB only backs up 60% of customer data and doesn't even do that on a consistent schedule ...
Data Guard SQL Apply - Oracle Software Downloads
... parameters. You will also have to modify the CONTROLFILE parameter to point to your logical standby 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 m ...
... parameters. You will also have to modify the CONTROLFILE parameter to point to your logical standby 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 m ...
Standby Database
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
Chapter 14: Query Optimization
... No need to generate all the join orders. Using dynamic programming, the least-cost join order for any subset of {r1, r2, . . . rn} is computed only once and stored for future use. To find best join tree for a set of n relations: To find best plan for a set S of n relations, consider all possib ...
... No need to generate all the join orders. Using dynamic programming, the least-cost join order for any subset of {r1, r2, . . . rn} is computed only once and stored for future use. To find best join tree for a set of n relations: To find best plan for a set S of n relations, consider all possib ...
Oracle10g Changes in Initialization and Data Dictionary
... Automatic Storage Management (this was part of Oracle 9i, but there are additional improvements in 10g): new volume manager for Oracle-based files. Oracle attempts to optimally create and distribute datafiles, log files, and controlfiles. Mirroring and available disks are taken into consideration, a ...
... Automatic Storage Management (this was part of Oracle 9i, but there are additional improvements in 10g): new volume manager for Oracle-based files. Oracle attempts to optimally create and distribute datafiles, log files, and controlfiles. Mirroring and available disks are taken into consideration, a ...
Setting Up a Hot Standby Database
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
... Disadvantages of Hot Standby • Hot standby only provides limited load-balancing because all users (except for read-only users) must continue to use the primary. • In contrast, OPS (Oracle Parallel Server) or replication allow use of multiple instances simultaneously. • For databases with heavy tr ...
Query Acceleration of Oracle Database 12c In
... rewriting of applications. Moreover, it works on any hardware platform supported by Oracle Database. By simply enabling Oracle Database In-Memory in an environment where Oracle Database 12c operates, existing applications can be used without any modification. Oracle Database In-Memory provides both ...
... rewriting of applications. Moreover, it works on any hardware platform supported by Oracle Database. By simply enabling Oracle Database In-Memory in an environment where Oracle Database 12c operates, existing applications can be used without any modification. Oracle Database In-Memory provides both ...
Backup and Recovery of SQL Anywhere, Tips and Techniques Joshua Savill
... Validates checksums for the database Scans a database object then validates relations to the object Should only be performed on a database with no connections, otherwise spurious errors can be reported indicating false database corruption Default behaviour is a full database validation Command l ...
... Validates checksums for the database Scans a database object then validates relations to the object Should only be performed on a database with no connections, otherwise spurious errors can be reported indicating false database corruption Default behaviour is a full database validation Command l ...
A*: Algebra for an Extended Object/Relational Model
... based on relational algebra and a relational calculation language based on the logic of first order. The logical aspect of the relational calculation allows the user to specify a query in a declarative way. In particular, the user does not need to know how data are physically stored in the database ...
... based on relational algebra and a relational calculation language based on the logic of first order. The logical aspect of the relational calculation allows the user to specify a query in a declarative way. In particular, the user does not need to know how data are physically stored in the database ...
Accessing Databases with JDBC
... A database is an organized collection of data. There are many different strategies for organizing data to facilitate easy access and manipulation. A database management system (DBMS) provides mechanisms for storing, organizing, retrieving and modifying data for many users. Database management system ...
... A database is an organized collection of data. There are many different strategies for organizing data to facilitate easy access and manipulation. A database management system (DBMS) provides mechanisms for storing, organizing, retrieving and modifying data for many users. Database management system ...
Introduction to SQL
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
original - Kansas State University
... Store each top level element as a string field of a tuple in a relational database Use a single relation to store all elements, or Use a separate relation for each top-level element type E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
... Store each top level element as a string field of a tuple in a relational database Use a single relation to store all elements, or Use a separate relation for each top-level element type E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
PDF file - Jim Gray
... minor league game. The term “data warehouse” had not yet been coined, and many of the parallel technologies taking aim at decision support were still on the drawing board. Global competition had not yet forced corporations into serious self-examination, nor had it taught them to respect and cherish ...
... minor league game. The term “data warehouse” had not yet been coined, and many of the parallel technologies taking aim at decision support were still on the drawing board. Global competition had not yet forced corporations into serious self-examination, nor had it taught them to respect and cherish ...
Document
... Database Upgrade Assistant Advantages Performs all necessary steps for the upgrade Interacts with the DBA if decisions need to be made Provides complete HTML report of the upgrade process Significantly reduces database downtime ...
... Database Upgrade Assistant Advantages Performs all necessary steps for the upgrade Interacts with the DBA if decisions need to be made Provides complete HTML report of the upgrade process Significantly reduces database downtime ...
Database as a Service: Challenges & Opportunities
... Most data stores support single row transactions Tunable consistency and availability ...
... Most data stores support single row transactions Tunable consistency and availability ...
7 ACCESS Keeping student records
... The more "atomic" your fields the more flexible will be your database. Atomic here means "reduced to its simplest form." The less each field captures in the way of entries the better. For example, in a database of names and addresses, you would keep each part of the person's name as a separate field ...
... The more "atomic" your fields the more flexible will be your database. Atomic here means "reduced to its simplest form." The less each field captures in the way of entries the better. For example, in a database of names and addresses, you would keep each part of the person's name as a separate field ...
PHP MySQL Introduction
... be required to log in to the database. If you have PHPMyAdmin (or a similar program) installed you can just go to it to log in with your user name and password. If not you must do all your database administration using PHP scripts. ...
... be required to log in to the database. If you have PHPMyAdmin (or a similar program) installed you can just go to it to log in with your user name and password. If not you must do all your database administration using PHP scripts. ...
ÿþE PMS ystem B ackupand R ecovery G uide R elease 1 1 . 1 . 2 . 2
... Full—Creates a copy of data that can include parts of a database such as the control file, transaction files (redo logs), archive files, and data files. This backup type protects data from application error and safeguards against loss by providing a way to restore original data. Perform this backup ...
... Full—Creates a copy of data that can include parts of a database such as the control file, transaction files (redo logs), archive files, and data files. This backup type protects data from application error and safeguards against loss by providing a way to restore original data. Perform this backup ...
Product Architecture
... • Directory Services • Service • Browser and IP Phone Agent Service • LDAP Monitor Service • Licensing and Resource Manager Service • Recording and Statistics Service • Sync Service • Tomcat Web Service The Enterprise Service and BIPPA Service interact with the CTI service, typically running on a PG ...
... • Directory Services • Service • Browser and IP Phone Agent Service • LDAP Monitor Service • Licensing and Resource Manager Service • Recording and Statistics Service • Sync Service • Tomcat Web Service The Enterprise Service and BIPPA Service interact with the CTI service, typically running on a PG ...
KorthDB6_ch15
... Protocol does not guarantee recoverability or cascade freedom Need to introduce commit dependencies to ensure recoverability Transactions may have to lock data items that they do not access. increased locking overhead, and additional waiting time potential decrease in concurrency ...
... Protocol does not guarantee recoverability or cascade freedom Need to introduce commit dependencies to ensure recoverability Transactions may have to lock data items that they do not access. increased locking overhead, and additional waiting time potential decrease in concurrency ...
One-Copy Serializability with Snapshot Isolation under
... With careful design and engineering, SI engines can be replicated to get even higher performance with a replicated form of SI such as Generalized Snapshot Isolation (GSI) [13], which is also not serializable. The objective of this paper is to provide a concurrency control algorithm for replicated SI ...
... With careful design and engineering, SI engines can be replicated to get even higher performance with a replicated form of SI such as Generalized Snapshot Isolation (GSI) [13], which is also not serializable. The objective of this paper is to provide a concurrency control algorithm for replicated SI ...
ch5
... subformula is true if and only if there is a value of x in dom(P1) such that P1(x) is true. 3. For every “for all” subformula of the form x (P1 (x)), the subformula is true if and only if P1(x) is true for all values x from dom (P1). ...
... subformula is true if and only if there is a value of x in dom(P1) such that P1(x) is true. 3. For every “for all” subformula of the form x (P1 (x)), the subformula is true if and only if P1(x) is true for all values x from dom (P1). ...