SHRINK SPACE
... estimated space used by the object (AVG_ROW_LEN * NUM_ROWS) (assumes objects have been analyzed) 2. Review script output and identify target objects for reorganization Identify/Create “scratch” tablespace For each object to be reorganized, use the Enterprise Manager Reorg wizard to recreate each obj ...
... estimated space used by the object (AVG_ROW_LEN * NUM_ROWS) (assumes objects have been analyzed) 2. Review script output and identify target objects for reorganization Identify/Create “scratch” tablespace For each object to be reorganized, use the Enterprise Manager Reorg wizard to recreate each obj ...
Lecture 14- Parallel Databases
... data can be partitioned and each processor can work independently on its own partition. ...
... data can be partitioned and each processor can work independently on its own partition. ...
Technology In Action, Complete, 11e (Evans et al.) Chapter 11
... 59) When using Access, the text of the Gettysburg Address would be stored in a short text field. Answer: FALSE Diff: 3 Section Ref: Database Terminology 60) Employees' last names would usually make an appropriate primary-key field. Answer: FALSE Diff: 1 Section Ref: Using Primary Keys 61) Normalizat ...
... 59) When using Access, the text of the Gettysburg Address would be stored in a short text field. Answer: FALSE Diff: 3 Section Ref: Database Terminology 60) Employees' last names would usually make an appropriate primary-key field. Answer: FALSE Diff: 1 Section Ref: Using Primary Keys 61) Normalizat ...
Security
... mapped to a special user account inside all databases called dbo. Any object that a system administrator creates automatically belongs to dbo. The dbo user is a default account and cannot be deleted. ...
... mapped to a special user account inside all databases called dbo. Any object that a system administrator creates automatically belongs to dbo. The dbo user is a default account and cannot be deleted. ...
Chapter Outline
... 1 table in a dataset is needed • A single Connection object can supply the connection for more than 1 data adapter • Useful when a list is available for the user to select the record(s) to display – 1 dataset for the list itself – 1 dataset for the selected record(s) ...
... 1 table in a dataset is needed • A single Connection object can supply the connection for more than 1 data adapter • Useful when a list is available for the user to select the record(s) to display – 1 dataset for the list itself – 1 dataset for the selected record(s) ...
Lecture 14- Parallel Databases
... large volumes of transaction data are collected and stored for later analysis. multimedia objects like images are increasingly stored in databases Large-scale parallel database systems increasingly used for: storing large volumes of data processing time-consuming decision-support queries providing h ...
... large volumes of transaction data are collected and stored for later analysis. multimedia objects like images are increasingly stored in databases Large-scale parallel database systems increasingly used for: storing large volumes of data processing time-consuming decision-support queries providing h ...
Introduction to XML
... XPath Example
John
22
[email protected]
XPath: /Student[Name=“John”]/Email
Extracts: element with value
“[email protected]”
...
... XPath Example
Multi-Dimensional Clustering: a new data layout
... users access data from this database using subsets of dimensions. These access patterns can be considered as selecting regions from the large multidimensional cube. Most commercial database systems now include primary clustering indexes in their repertoire [3, 5]. In this scheme, an index composed o ...
... users access data from this database using subsets of dimensions. These access patterns can be considered as selecting regions from the large multidimensional cube. Most commercial database systems now include primary clustering indexes in their repertoire [3, 5]. In this scheme, an index composed o ...
Security and Integrity
... • View should be defined on a single table (no join, union, etc. used in FROM) • WHERE should not have nested SELECTs • Should not use GROUP BY or HAVING ...
... • View should be defined on a single table (no join, union, etc. used in FROM) • WHERE should not have nested SELECTs • Should not use GROUP BY or HAVING ...
Live adventure - from my PC to Oracle Remote Database
... Create an empty file on Linux box: $HOME/.ssh/authorized_keys Use puttygen.exe to generate SSH2-RSA keys (public and private) using Passphrase Copy and paste generated public key into authorized_keys file on Linux Save private key into dadbm.ppk file on locally on the client Adjust the Putty termina ...
... Create an empty file on Linux box: $HOME/.ssh/authorized_keys Use puttygen.exe to generate SSH2-RSA keys (public and private) using Passphrase Copy and paste generated public key into authorized_keys file on Linux Save private key into dadbm.ppk file on locally on the client Adjust the Putty termina ...
Oracle Transaction Isolation Levels Examples
... changes that were committed at the time the transaction began. Inserts, updates, and deletes aren't permitted in this mode (other sessions may update data, but not the READ ONLY transaction). Using this mode, you can achieve REPEATABLE READ and SERIALIZABLE levels of isolation. Will now move on to d ...
... changes that were committed at the time the transaction began. Inserts, updates, and deletes aren't permitted in this mode (other sessions may update data, but not the READ ONLY transaction). Using this mode, you can achieve REPEATABLE READ and SERIALIZABLE levels of isolation. Will now move on to d ...
ADB-Lecture14-InformationRetrieval
... Also, concept of “site” difficult to define since a URL prefix like cs.yale.edu contains many unrelated pages of varying popularity ...
... Also, concept of “site” difficult to define since a URL prefix like cs.yale.edu contains many unrelated pages of varying popularity ...
distributed databases and client-server
... Semijoin: Objective is to reduce the number of tuples in a relation before transferring it to another site. Example execution of Q or Q’: 1. Project the join attributes of Department at site 2, and transfer them to site 1. For Q, 4 * 100 = 400 bytes are transferred and for Q’, 9 * 100 = 900 bytes ar ...
... Semijoin: Objective is to reduce the number of tuples in a relation before transferring it to another site. Example execution of Q or Q’: 1. Project the join attributes of Department at site 2, and transfer them to site 1. For Q, 4 * 100 = 400 bytes are transferred and for Q’, 9 * 100 = 900 bytes ar ...
Decision Support Systems
... have their own databases that are used to Arguably considers DSS part of its solve a specific problem or set of problems internal building blocks. (DSS Applications) ...
... have their own databases that are used to Arguably considers DSS part of its solve a specific problem or set of problems internal building blocks. (DSS Applications) ...
Release notes PX-Web 2017 v1
... For performance reasons saved queries are now being cached in PX-Web. This means that when a saved query is being requested by a user it is also stored in the saved query cache. The next time the saved query is being requested it is taken from the cached instead of being loaded from the database. Th ...
... For performance reasons saved queries are now being cached in PX-Web. This means that when a saved query is being requested by a user it is also stored in the saved query cache. The next time the saved query is being requested it is taken from the cached instead of being loaded from the database. Th ...
Object-Oriented Design of Database Stored Procedures
... only helpful for developing programs and structuring databases, but they are also effective for designing stored procedures. A stored procedure is programming code that runs in the address space of a database management system (DBMS). All the major DBMS products (such as SQL Server, Oracle, MySQL, D ...
... only helpful for developing programs and structuring databases, but they are also effective for designing stored procedures. A stored procedure is programming code that runs in the address space of a database management system (DBMS). All the major DBMS products (such as SQL Server, Oracle, MySQL, D ...
Efficient Indexing Methods for Temporal Relations
... The representations can be different at each level (external, conceptual, physical), but we are concerned with the tuple representation at the physical level. Fig. l(a) shows timeinterval representation of the MANAGER and COMMISSION relations. On the other hand, the representation in Fig. l(b) store ...
... The representations can be different at each level (external, conceptual, physical), but we are concerned with the tuple representation at the physical level. Fig. l(a) shows timeinterval representation of the MANAGER and COMMISSION relations. On the other hand, the representation in Fig. l(b) store ...
CENG 776 Information Retrieval
... • Some of those documents may contain the information that satisfies user’s need (relevance) • How does the user retrieve those documents? • The user communicates information need to the computer by expressing it in the form of a query. ...
... • Some of those documents may contain the information that satisfies user’s need (relevance) • How does the user retrieve those documents? • The user communicates information need to the computer by expressing it in the form of a query. ...
CENG 776 Information Retrieval
... • Some of those documents may contain the information that satisfies user’s need (relevance) • How does the user retrieve those documents? • The user communicates information need to the computer by expressing it in the form of a query. ...
... • Some of those documents may contain the information that satisfies user’s need (relevance) • How does the user retrieve those documents? • The user communicates information need to the computer by expressing it in the form of a query. ...
Hibernate
... Data management tasks in OO languages are implemented by manipulating objects that are non-scalar values. Many relational database products can only store and manipulate scalar values such as integers and strings in normalized tables The programmer must convert the object values into groups of simpl ...
... Data management tasks in OO languages are implemented by manipulating objects that are non-scalar values. Many relational database products can only store and manipulate scalar values such as integers and strings in normalized tables The programmer must convert the object values into groups of simpl ...
cos 346 day 11
... Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
... Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
Spatial Query Languages - Computer Science and Engineering
... What is SQL? SQL - General Information is a standard query language for relational databases It support logical data model concepts, such as relations, keys, ... Supported by major brands, e.g. IBM DB2, Oracle, MS SQL Server, Sybase, ... 3 versions: SQL1 (1986), SQL2 (1992), SQL 3 (1999) Can expres ...
... What is SQL? SQL - General Information is a standard query language for relational databases It support logical data model concepts, such as relations, keys, ... Supported by major brands, e.g. IBM DB2, Oracle, MS SQL Server, Sybase, ... 3 versions: SQL1 (1986), SQL2 (1992), SQL 3 (1999) Can expres ...
lesson13
... • SQL Server can be configured to allow ownership chaining between specific databases or across all databases inside a single instance of SQL Server. • Cross-database ownership chaining is disabled by default. • When multiple database objects access each other sequentially, the sequence is known as ...
... • SQL Server can be configured to allow ownership chaining between specific databases or across all databases inside a single instance of SQL Server. • Cross-database ownership chaining is disabled by default. • When multiple database objects access each other sequentially, the sequence is known as ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.