Self-Driving Database Management Systems
... What is needed for a truly “self-driving” database management system (DBMS) is a new architecture that is designed for autonomous operation. This is different than earlier attempts because all aspects of the system are controlled by an integrated planning component that not only optimizes the system ...
... What is needed for a truly “self-driving” database management system (DBMS) is a new architecture that is designed for autonomous operation. This is different than earlier attempts because all aspects of the system are controlled by an integrated planning component that not only optimizes the system ...
KYMENLAAKSON AMMATTIKORKEAKOULU University of Applied Sciences
... problem, but due complexity of object databases, no vendor fully implemented this language. There is no need of joins in accessing data, because objects are stored as a whole. Therefore object databases offer best performance when working with a lot of information from one object. Db4o Db4o is an op ...
... problem, but due complexity of object databases, no vendor fully implemented this language. There is no need of joins in accessing data, because objects are stored as a whole. Therefore object databases offer best performance when working with a lot of information from one object. Db4o Db4o is an op ...
Standby Database
... 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 transaction activity, there will be increased network traffic due to log transfer. • If prima ...
... 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 transaction activity, there will be increased network traffic due to log transfer. • If prima ...
Flexible Query Answering over Graph-modeled Data
... can be made transparent to the designer and to the user of the target database. However, the database instance is not forced to conform the template in a rigid way (i.e. graph databases are schema-less). It is rather the initial structure of the graph database that can be extended or refined later. ...
... can be made transparent to the designer and to the user of the target database. However, the database instance is not forced to conform the template in a rigid way (i.e. graph databases are schema-less). It is rather the initial structure of the graph database that can be extended or refined later. ...
Setting Up a Hot Standby Database
... 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 transaction activity, there will be increased network traffic due to log transfer. • If prima ...
... 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 transaction activity, there will be increased network traffic due to log transfer. • If prima ...
this PDF file
... Databases which represent only the latest snapshot of the world being modeled are called snapshot databases. All conventional databases come under this category. Databases which represent transaction time alone and therefore treat valid time and transaction time as identical are called rollback data ...
... Databases which represent only the latest snapshot of the world being modeled are called snapshot databases. All conventional databases come under this category. Databases which represent transaction time alone and therefore treat valid time and transaction time as identical are called rollback data ...
Slide 1
... • Collect audit records written in XML or standard text file – Operating system SYSLOG • Collect Oracle database audit records from SYSLOG – Redo log • Extract before/after values and DDL changes to table • Microsoft SQL server versions 2000, 2005, 2008 • Server side trace – set specific audit event ...
... • Collect audit records written in XML or standard text file – Operating system SYSLOG • Collect Oracle database audit records from SYSLOG – Redo log • Extract before/after values and DDL changes to table • Microsoft SQL server versions 2000, 2005, 2008 • Server side trace – set specific audit event ...
13 Tips - Kevin S. Goff
... • Sometimes, however, the repetition of data might be so high that you might make an exception and normalize one or more dimensions (snowflake schema based on dimension outrigger) • Snowflake schemas are not “horrible”, but they can introduce complications (sometimes minor) in ETL processes and for ...
... • Sometimes, however, the repetition of data might be so high that you might make an exception and normalize one or more dimensions (snowflake schema based on dimension outrigger) • Snowflake schemas are not “horrible”, but they can introduce complications (sometimes minor) in ETL processes and for ...
Chapter 3
... Net using the formula CreditLimit – Balance from Customer table. 2. Get the Running Total from each order by multiplying Number Ordered and Quoted Price of the Orderline table. Aside from the Running Total show also the Order Number. 3. Get the Running Total per product from Item table by multiplyin ...
... Net using the formula CreditLimit – Balance from Customer table. 2. Get the Running Total from each order by multiplying Number Ordered and Quoted Price of the Orderline table. Aside from the Running Total show also the Order Number. 3. Get the Running Total per product from Item table by multiplyin ...
Preventing, Detecting, and Repairing Block Corruption: Oracle
... contents are logically inconsistent. Logical block corruption can also occur when the structure below the beginning of the block (below the block header) is corrupt. In this case, the block checksum is correct but the block structures may be corrupt. Logical corruption can also result from a lost wr ...
... contents are logically inconsistent. Logical block corruption can also occur when the structure below the beginning of the block (below the block header) is corrupt. In this case, the block checksum is correct but the block structures may be corrupt. Logical corruption can also result from a lost wr ...
ORACLE LECTURE SERIES
... • A relational database allows the definition of data structures, storage and retrieval operations and integrity constraints. In such a database the data and relations between them are organized in tables. • A table is a collection of records and each record in a table contains the same fields. • Ce ...
... • A relational database allows the definition of data structures, storage and retrieval operations and integrity constraints. In such a database the data and relations between them are organized in tables. • A table is a collection of records and each record in a table contains the same fields. • Ce ...
Integrating reliable memory in databases
... log records can be removed before being written to the log disk [DeWitt84, Hagmann86]. For example, undo records may be removed if they belong to transactions that have committed, and redo records may be removed if they belong to transactions that have aborted. Finally, critical information may be s ...
... log records can be removed before being written to the log disk [DeWitt84, Hagmann86]. For example, undo records may be removed if they belong to transactions that have committed, and redo records may be removed if they belong to transactions that have aborted. Finally, critical information may be s ...
StarCITE Engineering Update
... • The result set returned by sys.dm_db_missing_index_columns returns this information in its column_usage column. • Create Index by Using Missing Index Information – List the equality columns first (leftmost in the column list). – List the inequality columns after the equality columns (to the right ...
... • The result set returned by sys.dm_db_missing_index_columns returns this information in its column_usage column. • Create Index by Using Missing Index Information – List the equality columns first (leftmost in the column list). – List the inequality columns after the equality columns (to the right ...
Block oriented processing of relational database
... Counts if required. This strategy reduces the SORT cost by removing duplicates inside sort at insert time. Thus, the intermediate aggregation results are likely to fit in sort memory and there will be no need for U 0 and merging. At present, most database systems perform block based operations only ...
... Counts if required. This strategy reduces the SORT cost by removing duplicates inside sort at insert time. Thus, the intermediate aggregation results are likely to fit in sort memory and there will be no need for U 0 and merging. At present, most database systems perform block based operations only ...
Proceedings of the 17 Large Installation Systems Administration Conference USENIX Association
... poorly when deleting messages. In general, we believe that a database system offers better email storage facilities than traditional file systems. Introduction Most IMAP and POP3 servers, even ones commonly used in environments with many users, store mail data in flat text files. This suffices when ...
... poorly when deleting messages. In general, we believe that a database system offers better email storage facilities than traditional file systems. Introduction Most IMAP and POP3 servers, even ones commonly used in environments with many users, store mail data in flat text files. This suffices when ...
Controlling User Access
... database access and use. With Oracle Server database security, you can do the following: • Control Database Access • Give access to specific objects in the database • Confirm given and received privileges with the Oracle data dictionary • Create synonyms for database objects Data security can be cla ...
... database access and use. With Oracle Server database security, you can do the following: • Control Database Access • Give access to specific objects in the database • Confirm given and received privileges with the Oracle data dictionary • Create synonyms for database objects Data security can be cla ...
CS6302-DBMS_Notes - e
... For the sake of overall performance of the system and faster response, many systems allow multiple users to update the data simultaneously. In such an environment, interaction of concurrent updates is possible and may result in inconsistent data. To guard against this possibility, the system must ma ...
... For the sake of overall performance of the system and faster response, many systems allow multiple users to update the data simultaneously. In such an environment, interaction of concurrent updates is possible and may result in inconsistent data. To guard against this possibility, the system must ma ...
VI-Attached Database Storage - Purdue University :: Computer
... to storage by using VI–based interconnects. High–performance database systems typically use specialized storage area networks (SANs), such as Fibre Channel, for the same purpose. We propose an alternative storage architecture called VI–attached Volume Vault (V3) that consists of a storage cluster an ...
... to storage by using VI–based interconnects. High–performance database systems typically use specialized storage area networks (SANs), such as Fibre Channel, for the same purpose. We propose an alternative storage architecture called VI–attached Volume Vault (V3) that consists of a storage cluster an ...
Oracle Backup Methods
... Instant backup and recovery of large data sets using a sophisticated, scalable, and fail-safe pointer system of storage blocks. Snapshots represent a frozen view of data taken at a specific point-in-time. Data and entire environments can be restored to a known stable point prior to the event that ca ...
... Instant backup and recovery of large data sets using a sophisticated, scalable, and fail-safe pointer system of storage blocks. Snapshots represent a frozen view of data taken at a specific point-in-time. Data and entire environments can be restored to a known stable point prior to the event that ca ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".