Customer Case Study Real Application Testing Usage at DIRECTV
... Utilized to upgrade from Oracle Database 9i to 10g Use it to validate all DB changes in Oracle Database 10g CBO statistics refresh Addition of new indexes Few customizations done to handle complexity of the environment ...
... Utilized to upgrade from Oracle Database 9i to 10g Use it to validate all DB changes in Oracle Database 10g CBO statistics refresh Addition of new indexes Few customizations done to handle complexity of the environment ...
extent
... ONLINE|OFFLINE SEGMENT SPACE MANAGEMENT MANUAL|AUTO Add multiple files, separated by commas if needed Clause is required for user managed files Clause is optional when using OMF Can be used to specify SIZE of OMF file Note: additional sub-clauses shown later Oracle9i Database Administrator: Impl ...
... ONLINE|OFFLINE SEGMENT SPACE MANAGEMENT MANUAL|AUTO Add multiple files, separated by commas if needed Clause is required for user managed files Clause is optional when using OMF Can be used to specify SIZE of OMF file Note: additional sub-clauses shown later Oracle9i Database Administrator: Impl ...
OBJECTIVES SQL OVERVIEW HISTORY OF SQL
... Note: With aggregate functions you cant have singlevalued columns included in the SELECT clause, unless they are included in the GROUP BY clause. Chapter 6 ...
... Note: With aggregate functions you cant have singlevalued columns included in the SELECT clause, unless they are included in the GROUP BY clause. Chapter 6 ...
Fundamentals of Database Systems
... ▶ The attribute specification is a (comma separated) list of items: ⟨attribute name⟩ ⟨domain⟩ each of which may be followed by an optional NOT NULL ▶ In SQL names are not case-sensitive ▶ DROP TABLE removes relation schemata from a database schema ▶ ALTER TABLE is used to change existing relation sc ...
... ▶ The attribute specification is a (comma separated) list of items: ⟨attribute name⟩ ⟨domain⟩ each of which may be followed by an optional NOT NULL ▶ In SQL names are not case-sensitive ▶ DROP TABLE removes relation schemata from a database schema ▶ ALTER TABLE is used to change existing relation sc ...
Package `RODBC`
... Primary keys are implemented in some DBMSs and drivers. A table can have a single column designated as a primary key or, in some cases, multiple columns. Primary keys should not be nullable (that is, cannot contain missing values). They can be specified as part of a ‘CREATE TABLE’ statement or added ...
... Primary keys are implemented in some DBMSs and drivers. A table can have a single column designated as a primary key or, in some cases, multiple columns. Primary keys should not be nullable (that is, cannot contain missing values). They can be specified as part of a ‘CREATE TABLE’ statement or added ...
Package ‘RODBC’ October 17, 2014
... Primary keys are implemented in some DBMSs and drivers. A table can have a single column designated as a primary key or, in some cases, multiple columns. Primary keys should not be nullable (that is, cannot contain missing values). They can be specified as part of a ‘CREATE TABLE’ statement or added ...
... Primary keys are implemented in some DBMSs and drivers. A table can have a single column designated as a primary key or, in some cases, multiple columns. Primary keys should not be nullable (that is, cannot contain missing values). They can be specified as part of a ‘CREATE TABLE’ statement or added ...
Challenges in Embedded Database System Administration Proceedings of the Embedded Systems Workshop
... of an already-costly query interface (e.g. embedded SQL). Berkeley DB’s heritage is also apparent in its data model; it has none. The database stores unstructured key/data pairs, specified as variable length byte strings. This leaves schema design and representation issues the responsibility of the ...
... of an already-costly query interface (e.g. embedded SQL). Berkeley DB’s heritage is also apparent in its data model; it has none. The database stores unstructured key/data pairs, specified as variable length byte strings. This leaves schema design and representation issues the responsibility of the ...
Extracting UML/OCL Integrity Constraints and Derived Types from Relational Databases
... understanding the set of business rules enforced by a given database system is a timeconsuming and error-prone activity since it implies querying/browsing the database dictionary to extract and analyze the retrieved data. Note that, even if SQL is a standard language, each vendor presents slight var ...
... understanding the set of business rules enforced by a given database system is a timeconsuming and error-prone activity since it implies querying/browsing the database dictionary to extract and analyze the retrieved data. Note that, even if SQL is a standard language, each vendor presents slight var ...
ADM1 File
... Choice of a DBMS Data Model Mapping (Logical Database Design) Physical Database Design Database System Implementation and Tuning ...
... Choice of a DBMS Data Model Mapping (Logical Database Design) Physical Database Design Database System Implementation and Tuning ...
An Investigation Into The Security Of Oracle 10g
... store user data. • Their major weakness is protecting against SQL Injection as well as using a weak password hashing algorithm. • A lot of packages, stored procedures and functions have to be reviewed for SQL Injection. ...
... store user data. • Their major weakness is protecting against SQL Injection as well as using a weak password hashing algorithm. • A lot of packages, stored procedures and functions have to be reviewed for SQL Injection. ...
Fundamentals of Database Systems
... Constraints on a Single Table I We may add constraints such as uniqueness constraints, primary keys and foreign keys to a table definition extending the CREATE TABLE statement I NOT NULL constraints can be attached to an attribute I disallow any occurrences of the null maker on that attribute I a ta ...
... Constraints on a Single Table I We may add constraints such as uniqueness constraints, primary keys and foreign keys to a table definition extending the CREATE TABLE statement I NOT NULL constraints can be attached to an attribute I disallow any occurrences of the null maker on that attribute I a ta ...
Data Mining and Data Warehousing Henryk Maciejewski Data
... • OLAP queries related to a subset of dimensions – Result is aggregated at query time from the NWAY cube – E.g., report on sales of all products over subsequent years – sum for all products and all months needs to be computed at run time – If there are many dimensions with high cardinality, this can ...
... • OLAP queries related to a subset of dimensions – Result is aggregated at query time from the NWAY cube – E.g., report on sales of all products over subsequent years – sum for all products and all months needs to be computed at run time – If there are many dimensions with high cardinality, this can ...
Remote Backup Systems
... Copying the entire page table is very expensive Can be reduced by using a page table structured like a B+-tree – No need to copy entire tree, only need to copy paths in the tree that lead to updated leaf nodes Commit overhead is high even with above extension Need to flush every updated page ...
... Copying the entire page table is very expensive Can be reduced by using a page table structured like a B+-tree – No need to copy entire tree, only need to copy paths in the tree that lead to updated leaf nodes Commit overhead is high even with above extension Need to flush every updated page ...
CS186: Introduction to Database Systems
... relationship type with an owner or identifying entity type Entities are identified by the combination of: A partial key of the weak entity type The particular entity they are related to in the identifying entity type Example: Suppose that a DEPENDENT entity is identified by the dependent’s fir ...
... relationship type with an owner or identifying entity type Entities are identified by the combination of: A partial key of the weak entity type The particular entity they are related to in the identifying entity type Example: Suppose that a DEPENDENT entity is identified by the dependent’s fir ...
Remote-Backup
... Copying the entire page table is very expensive Can be reduced by using a page table structured like a B+-tree – No need to copy entire tree, only need to copy paths in the tree that lead to updated leaf nodes Commit overhead is high even with above extension Need to flush every updated page ...
... Copying the entire page table is very expensive Can be reduced by using a page table structured like a B+-tree – No need to copy entire tree, only need to copy paths in the tree that lead to updated leaf nodes Commit overhead is high even with above extension Need to flush every updated page ...
Module 1 - Faculty Websites
... • Rename the default ID primary key field and change its data type, if necessary; or accept the default ID field with the AutoNumber data type • In the Add & Delete group on the FIELDS tab, click the button for the type of field you want to add to the table and then type the field name; Repeat this ...
... • Rename the default ID primary key field and change its data type, if necessary; or accept the default ID field with the AutoNumber data type • In the Add & Delete group on the FIELDS tab, click the button for the type of field you want to add to the table and then type the field name; Repeat this ...
Introduction to Oracle
... BLOB – binary large object (e.g. PDF document or JPEG image) CLOB – character large object (e.g. HTML document) ...
... BLOB – binary large object (e.g. PDF document or JPEG image) CLOB – character large object (e.g. HTML document) ...
Critique of Relational Database Models
... • small number of concepts single mode of representation + uniform update cf multi-mode + proliferation of mechanisms • the dual-mode principle embedded DML to access the DB from programs autonomous activity resembles user interaction • physical data independence separate conceptual model / physical ...
... • small number of concepts single mode of representation + uniform update cf multi-mode + proliferation of mechanisms • the dual-mode principle embedded DML to access the DB from programs autonomous activity resembles user interaction • physical data independence separate conceptual model / physical ...
designing a multidimensional data warehouse for
... to obtain more detailed information, such as they could do with a Microsoft Office Excel pivot table. Although the existing set of predefined reports is sufficient for many users, more advanced users need direct query access to the database for interactive queries and specialized reports. However, b ...
... to obtain more detailed information, such as they could do with a Microsoft Office Excel pivot table. Although the existing set of predefined reports is sufficient for many users, more advanced users need direct query access to the database for interactive queries and specialized reports. However, b ...
Processing SSAS multidimensional databsaes
... Compares dimensional data with results of If relationships change, will drop indexes on related partitions Follow with ProcessIndexes or set ProcessAffectedObjects flag ...
... Compares dimensional data with results of If relationships change, will drop indexes on related partitions Follow with ProcessIndexes or set ProcessAffectedObjects flag ...
DSS Chapter 1
... have the knowledge of high-performance software, hardware and networking technologies. possess solid business knowledge and insight. be familiar with the decision-making processes so as to suitably design/maintain the data warehouse structure. ...
... have the knowledge of high-performance software, hardware and networking technologies. possess solid business knowledge and insight. be familiar with the decision-making processes so as to suitably design/maintain the data warehouse structure. ...