ORACLE DATABASE HIGH AVAILABILITY
... ASM spreads files across all available storage and mirror at the database file level rather than the entire disk level. ASM simplifies the processes of setting up mirroring, adding disks, and removing disks Instead of managing hundreds and possibly thousands of files (as in a large data warehouse), ...
... ASM spreads files across all available storage and mirror at the database file level rather than the entire disk level. ASM simplifies the processes of setting up mirroring, adding disks, and removing disks Instead of managing hundreds and possibly thousands of files (as in a large data warehouse), ...
A Survey of Migration from Traditional Relational Databases towards
... structured or designed in such a way as to make them user and even system friendly. The tables are grouped together by subject areas that reflect data categories, such as data on customers, products and so on. The normalized structure divides data into entities, which create several tables in a rela ...
... structured or designed in such a way as to make them user and even system friendly. The tables are grouped together by subject areas that reflect data categories, such as data on customers, products and so on. The normalized structure divides data into entities, which create several tables in a rela ...
p1c3justenoughsql
... A book has exactly one publisher (in our model, although this is not true in real life, where a single edition of a book has one or more publishers). One publisher, though, might publish more than one book, and almost certainly does in order to stay in business! The relationship is one publisher pub ...
... A book has exactly one publisher (in our model, although this is not true in real life, where a single edition of a book has one or more publishers). One publisher, though, might publish more than one book, and almost certainly does in order to stay in business! The relationship is one publisher pub ...
PDF
... For purposes of comparison, we restrict our attention to those which parallel our use of digital scores and our handling of polyphony, not considering analog-based systems, and those which disregard polyphony, as these systems tend to be quite different internally. We will focus on each system’s que ...
... For purposes of comparison, we restrict our attention to those which parallel our use of digital scores and our handling of polyphony, not considering analog-based systems, and those which disregard polyphony, as these systems tend to be quite different internally. We will focus on each system’s que ...
Database Mirroring
... Automatic, transparent client redirect Works with standard certified servers, storage and networks No location limitations ...
... Automatic, transparent client redirect Works with standard certified servers, storage and networks No location limitations ...
9780538478298_PPT_ch05
... • The number and types of database applications will continue to evolve and yield real business benefits – Identify and briefly discuss business intelligence, data mining, and other database applications Principles of Information Systems, Tenth Edition ...
... • The number and types of database applications will continue to evolve and yield real business benefits – Identify and briefly discuss business intelligence, data mining, and other database applications Principles of Information Systems, Tenth Edition ...
Chapter 14: Concurrency Control
... Given a transaction Ti that does not follow two-phase locking, we can find a transaction Tj that uses two-phase locking, and a schedule for Ti and Tj that is not conflict serializable. ...
... Given a transaction Ti that does not follow two-phase locking, we can find a transaction Tj that uses two-phase locking, and a schedule for Ti and Tj that is not conflict serializable. ...
Document
... Unique identification ; e.g. the key attributes is a phone directory in a set of last name, first name and address. non redundancy ; any key attribute selected and tabulated should keep the key's uniqueness. e.g. address can not be dropped from telephone address, because there may be many with the s ...
... Unique identification ; e.g. the key attributes is a phone directory in a set of last name, first name and address. non redundancy ; any key attribute selected and tabulated should keep the key's uniqueness. e.g. address can not be dropped from telephone address, because there may be many with the s ...
select - IDA.LiU.se
... Q14: List all employees and the projects they work with sorted with respect to department and within the department sorted alphabetically with respect to last name and then first name. ...
... Q14: List all employees and the projects they work with sorted with respect to department and within the department sorted alphabetically with respect to last name and then first name. ...
Chapter 14 Methodology - Conceptual Database Design
... requirements specification. The attributes can be identified where the noun or noun phrase is a property, quality, identifier, or characteristic of one of these entities or relationships. By far the easiest thing to do when we have identified an entity (x) or a relationship (y) in the requirements s ...
... requirements specification. The attributes can be identified where the noun or noun phrase is a property, quality, identifier, or characteristic of one of these entities or relationships. By far the easiest thing to do when we have identified an entity (x) or a relationship (y) in the requirements s ...
A Methodology for Database System Performance Evaluation
... our measure of degree of data sharing. If the degree of data sharing is 0%, there is no data sharing amongst the concurrently executing queries and each query will reference its own partition of the database (or a separate database). Furthermore, all queries from the same application will reference ...
... our measure of degree of data sharing. If the degree of data sharing is 0%, there is no data sharing amongst the concurrently executing queries and each query will reference its own partition of the database (or a separate database). Furthermore, all queries from the same application will reference ...
PHP Access to MySQL
... • Overlong inputs can also cause problems • Always clean input – $input = escapeshellcmd($input); – $input = substr($input,$maxlength); ...
... • Overlong inputs can also cause problems • Always clean input – $input = escapeshellcmd($input); – $input = substr($input,$maxlength); ...
Chapter 16: Concurrency Control Lock-Based Protocols Lock
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
Chapter 12
... WHERE CUS_BALANCE > 1000; All 10,000 CUSTOMER rows must travel through the network to be evaluated at site A, even if 50 of them have balances greater than $1,000 Client/server architecture is similar to that of the network file server except that all database processing is done at the server site, ...
... WHERE CUS_BALANCE > 1000; All 10,000 CUSTOMER rows must travel through the network to be evaluated at site A, even if 50 of them have balances greater than $1,000 Client/server architecture is similar to that of the network file server except that all database processing is done at the server site, ...
UniData - Strategy 7 Corporation
... (RFS) feature logs transactional and nontransactional updates to disk or tape to protect the structural and logical integrity of files in the event of a media or system failure. RFS speeds recovery by processing only committed transactions. RFS Archiving can roll forward journal logs since your last ...
... (RFS) feature logs transactional and nontransactional updates to disk or tape to protect the structural and logical integrity of files in the event of a media or system failure. RFS speeds recovery by processing only committed transactions. RFS Archiving can roll forward journal logs since your last ...
datapumpdoag2009
... — Dump file set will consist of one or more files to the value of PARALLEL — Can use substitution variable in the filename for automatic naming • For example : mydumpfileset%U.dmp • %U can have values from 1 to 99 The export can also be created in multiple files based on a file size limit — FILESI ...
... — Dump file set will consist of one or more files to the value of PARALLEL — Can use substitution variable in the filename for automatic naming • For example : mydumpfileset%U.dmp • %U can have values from 1 to 99 The export can also be created in multiple files based on a file size limit — FILESI ...
Database Performance: A Guide to Tools and Analysis
... It's important to have someone who's qualified and familiar with your database system to routinely check its performance and measure its effectiveness. Choose diagnostic tools that can monitor daily health and performance. ...
... It's important to have someone who's qualified and familiar with your database system to routinely check its performance and measure its effectiveness. Choose diagnostic tools that can monitor daily health and performance. ...
Pass4sure 70
... D: An Access database doesn't have a Windows NT account. An Access database could have a username and a password. QUESTION 5 You want to configure SQL Server to notify you by e-mail when an alert occurs. Which series of steps must you perform? A. Configure the SQL Server Agent service to log on as t ...
... D: An Access database doesn't have a Windows NT account. An Access database could have a username and a password. QUESTION 5 You want to configure SQL Server to notify you by e-mail when an alert occurs. Which series of steps must you perform? A. Configure the SQL Server Agent service to log on as t ...
Document
... A unique sequential (incremented by 1) number or random 4 bytes number assigned whenever a new record is added to a table. ...
... A unique sequential (incremented by 1) number or random 4 bytes number assigned whenever a new record is added to a table. ...
Lecture 5: Active Databases
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...