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... You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that a large amount of memory is consumed by single-use dynamic queries. You need to reduce procedure cache usage from these statements without creatin ...
... You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that a large amount of memory is consumed by single-use dynamic queries. You need to reduce procedure cache usage from these statements without creatin ...
dbms interview questions and answers for all unit
... The multivalue, multicolumn problem occurs when a table is designed to include multiple columns that hold variations of one type of attribute data. One example is where boat owners have the names of their boats stored as BOAT_01, BOAT_02 and BOAT_03. 13. What is a foreign key, and what is it used fo ...
... The multivalue, multicolumn problem occurs when a table is designed to include multiple columns that hold variations of one type of attribute data. One example is where boat owners have the names of their boats stored as BOAT_01, BOAT_02 and BOAT_03. 13. What is a foreign key, and what is it used fo ...
Introduction to Database Systems
... • A database constraint is a logical constraint about the data expressed in a logical language. – STUDENT.AGE >15 – If (STUDENT.CLASS ==cs43005) then (STUDENT.PRIOR_CLASS ==cs31001) • Database is consistent if data at each time satisfies all integrity constraints. • Input to any application is a set ...
... • A database constraint is a logical constraint about the data expressed in a logical language. – STUDENT.AGE >15 – If (STUDENT.CLASS ==cs43005) then (STUDENT.PRIOR_CLASS ==cs31001) • Database is consistent if data at each time satisfies all integrity constraints. • Input to any application is a set ...
Chapter 1
... – Same data is held by different programs. – Wasted space and potentially different values and/or different formats for the same item. ...
... – Same data is held by different programs. – Wasted space and potentially different values and/or different formats for the same item. ...
Best Practices Slide Deck
... Installing the SharePoint binaries is the easy part but there are many factors to consider before you click the install : •Location ...
... Installing the SharePoint binaries is the easy part but there are many factors to consider before you click the install : •Location ...
BizDataX vs SQL scripts Comparison
... SQL Scripts vs. BizDataX This comparison sheet provides better insight into the differences when using database scripts (like PL/SQL and T-SQL) versus the BizDataX platform for data anonymization and test data management purposes. Most organizations understand that data anonymization can help meet t ...
... SQL Scripts vs. BizDataX This comparison sheet provides better insight into the differences when using database scripts (like PL/SQL and T-SQL) versus the BizDataX platform for data anonymization and test data management purposes. Most organizations understand that data anonymization can help meet t ...
Finding Frequent Itemsets by Transaction Mapping
... attempted to reduce the number of database scans by dividing the database into blocks and adding new candidate itemsets if all their subsets were already known to be frequent. Apriori algorithm needs many database scans and for each scan, frequent itemsets are searched by pattern matching, which is ...
... attempted to reduce the number of database scans by dividing the database into blocks and adding new candidate itemsets if all their subsets were already known to be frequent. Apriori algorithm needs many database scans and for each scan, frequent itemsets are searched by pattern matching, which is ...
Database Tutorial
... 'Create connection object, define connection string, open database Set oConnection = server.createobject("ADODB.Connection") ...
... 'Create connection object, define connection string, open database Set oConnection = server.createobject("ADODB.Connection") ...
Database Systems: Design, Implementation, and Management
... Distributed Processing and Distributed Database Distributed processing does not require a distributed database, but a distributed database requires distributed processing. Distributed processing may be based on a single database located on a single computer. In order to manage distributed data, ...
... Distributed Processing and Distributed Database Distributed processing does not require a distributed database, but a distributed database requires distributed processing. Distributed processing may be based on a single database located on a single computer. In order to manage distributed data, ...
Projects: 1. You have given a brand new system. We need to install
... 1. Create database in your own dev and test instances and create all the tables 2. Write a T-SQL script to insert 10000 records for each table in the development databases. 3. Write script to denormalize a normalized table. Also use SSMS 4. Write a script to normalize a flat table. Also use SSMS 1. ...
... 1. Create database in your own dev and test instances and create all the tables 2. Write a T-SQL script to insert 10000 records for each table in the development databases. 3. Write script to denormalize a normalized table. Also use SSMS 4. Write a script to normalize a flat table. Also use SSMS 1. ...
ppt
... Durability requirement — once the user has been notified that the transaction has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or ...
... Durability requirement — once the user has been notified that the transaction has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or ...
Using Ellipsoidal Quadtrees for Visualisation of National and Global
... Figure 2. a) Definition of the facets along the earth ellipsoid. b) An example of how the earth's surface is divided along the meridians and parallels. The facets can be used for indexing and addressing geographic data. EQT has a hierarchical structure similar to ordinary quadtrees. The facets can b ...
... Figure 2. a) Definition of the facets along the earth ellipsoid. b) An example of how the earth's surface is divided along the meridians and parallels. The facets can be used for indexing and addressing geographic data. EQT has a hierarchical structure similar to ordinary quadtrees. The facets can b ...
A data-oriented transaction execution engine and supporting tools
... given a workload, tries to balance the load across the system and minimize the non-partitioning aligned accesses. The user inputs a workload as a set of transactions with their expected execution frequencies. Then, the tool suggests a partitioning scheme to reduce the need of re-partitioning at run ...
... given a workload, tries to balance the load across the system and minimize the non-partitioning aligned accesses. The user inputs a workload as a set of transactions with their expected execution frequencies. Then, the tool suggests a partitioning scheme to reduce the need of re-partitioning at run ...
Mobule 14 - Mapping Relational DB to OO
... •Defining the identity of objects/entity instances •Methods of accessing persistent data •Focus on data (relational databases) versus integrated data and behavior (the object-oriented approach) •Architectural styles •Support for managing transactions ...
... •Defining the identity of objects/entity instances •Methods of accessing persistent data •Focus on data (relational databases) versus integrated data and behavior (the object-oriented approach) •Architectural styles •Support for managing transactions ...
Slide 1
... columns in a table that contains a value that is unique across all records. SQL Server also supports identity columns. An identity column is a numeric column whose values are generated automatically whenever a new record is inserted. They are often used as the primary key for a table. It is not ...
... columns in a table that contains a value that is unique across all records. SQL Server also supports identity columns. An identity column is a numeric column whose values are generated automatically whenever a new record is inserted. They are often used as the primary key for a table. It is not ...
Transactions
... The last ACID property is durability. Durability means that once a transaction is committed, the effects of the transaction remain permanently in the database, even in the event of a system failure. The SQL Server transaction log and your database backups provide durability. If SQL Server, the o ...
... The last ACID property is durability. Durability means that once a transaction is committed, the effects of the transaction remain permanently in the database, even in the event of a system failure. The SQL Server transaction log and your database backups provide durability. If SQL Server, the o ...
DBAdminFund_PPT_3.2
... When using the multiple-record syntax, the INSERT INTO statement precedes a SELECT statement and adds a single or multiple records to a table. This is referred to as an append query, as it copies records from one or more tables to another. The tables that contain the records being appended are not a ...
... When using the multiple-record syntax, the INSERT INTO statement precedes a SELECT statement and adds a single or multiple records to a table. This is referred to as an append query, as it copies records from one or more tables to another. The tables that contain the records being appended are not a ...
Overview of Transaction Management
... ORA-08177: can't serialize access for this transaction Means another transaction won for a contended write ...
... ORA-08177: can't serialize access for this transaction Means another transaction won for a contended write ...
Introduction to Database
... develop powerful, complex applications. Relatively unskilled programmers and non-programmer "power users" can use it to build simple applications without having to deal with features they don't understand. ...
... develop powerful, complex applications. Relatively unskilled programmers and non-programmer "power users" can use it to build simple applications without having to deal with features they don't understand. ...
060010102 – Database Management Systems
... 9. A file could be made of records which are of different sizes. These records are called variablelength records. 10. Permanent storage of data is done on the main memory. 11. Auxiliary memory devices are volatile in nature. 12. Cost of auxiliary memory device is much more than that of main memory. ...
... 9. A file could be made of records which are of different sizes. These records are called variablelength records. 10. Permanent storage of data is done on the main memory. 11. Auxiliary memory devices are volatile in nature. 12. Cost of auxiliary memory device is much more than that of main memory. ...
- Benjamin Day Consulting, Inc.
... Employee has FK to a Supervisor Supervisor needs to be saved first ...
... Employee has FK to a Supervisor Supervisor needs to be saved first ...