Advanced SQL - Computer Engineering Department
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
Chapter 1: Introduction
... WARNING: always use prepared statements when taking an input from the user ...
... WARNING: always use prepared statements when taking an input from the user ...
Document
... Approach: for each customer, find the number of branches in Brooklyn at which they have accounts, and compare with total number of branches in Brooklyn. ...
... Approach: for each customer, find the number of branches in Brooklyn at which they have accounts, and compare with total number of branches in Brooklyn. ...
Advanced SQL
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
On Cephalopods - WordPress.com
... Most have well-developed eyes All cephalopods are active predators Move by jet-propulsion – expelling water at high ...
... Most have well-developed eyes All cephalopods are active predators Move by jet-propulsion – expelling water at high ...
item_name, color
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
... Procedures and functions can be invoked also from dynamic SQL SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
5. Advanced SQL
... return d_count; end Find the department name and budget of all departments with more ...
... return d_count; end Find the department name and budget of all departments with more ...
Database creation and/or reorganization over multiple database
... some of the records of the database may be tagged for deletion. tag these records. Over some period of time, those should be physically removed from the database. Hence, removing ...
... some of the records of the database may be tagged for deletion. tag these records. Over some period of time, those should be physically removed from the database. Hence, removing ...
Chapter 7: Relational Database Design
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
Transactions
... Transaction Concept - 2 E.g. transaction to transfer $50 from account A to account B: 1. read(A) 2. A := A – 50 3. write(A) 4. read(B) 5. B := B + 50 6. write(B) ...
... Transaction Concept - 2 E.g. transaction to transfer $50 from account A to account B: 1. read(A) 2. A := A – 50 3. write(A) 4. read(B) 5. B := B + 50 6. write(B) ...
Transactions
... each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are cascadeless ...
... each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are cascadeless ...
Document
... If a lock cannot be granted, the requesting transaction is made to wait till all incompatible locks held by other transactions have been released. The lock is then granted. Database System Concepts 3rd Edition ...
... If a lock cannot be granted, the requesting transaction is made to wait till all incompatible locks held by other transactions have been released. The lock is then granted. Database System Concepts 3rd Edition ...
Views
... update: the ability to update using the SQL update statement delete: the ability to delete tuples. all privileges: used as a short form for all the allowable privileges ...
... update: the ability to update using the SQL update statement delete: the ability to delete tuples. all privileges: used as a short form for all the allowable privileges ...
Ch.5
... referencing new row as : for inserts and updates Triggers can be activated before an event, which can serve as extra constraints. E.g. convert blank grades to null. create trigger setnull_trigger before update of takes referencing new row as nrow for each row when (nrow.grade = ‘ ‘) ...
... referencing new row as : for inserts and updates Triggers can be activated before an event, which can serve as extra constraints. E.g. convert blank grades to null. create trigger setnull_trigger before update of takes referencing new row as nrow for each row when (nrow.grade = ‘ ‘) ...
mod-6
... prereq information is missing for CS-315 and course information is missing for CS-437 Database System Concepts - 6th Edition ...
... prereq information is missing for CS-315 and course information is missing for CS-437 Database System Concepts - 6th Edition ...
Weak Entity Sets
... Table EM has attributes corresponding to the primary key of E and an attribute corresponding to multivalued attribute M E.g. Multivalued attribute dependent-names of employee is represented by a table employee-dependent-names( employee-id, dname) Each value of the multivalued attribute maps to ...
... Table EM has attributes corresponding to the primary key of E and an attribute corresponding to multivalued attribute M E.g. Multivalued attribute dependent-names of employee is represented by a table employee-dependent-names( employee-id, dname) Each value of the multivalued attribute maps to ...
ppt
... address query-evaluation algorithms, and query optimization techniques. These chapters provide an understanding of the internals of the storage and retrieval components of a database which are necessary for query processing and optimization ...
... address query-evaluation algorithms, and query optimization techniques. These chapters provide an understanding of the internals of the storage and retrieval components of a database which are necessary for query processing and optimization ...
Fundamentals of Database Systems
... Search Methods for Complex Selection: S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record po ...
... Search Methods for Complex Selection: S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record po ...
part 1 - IIIT
... Techniques to reduce that: Multiple Disks: Better throughput for both random access or “patterned” access. Sometimes cost becomes an issue. But still used in high end data warehouses. ...
... Techniques to reduce that: Multiple Disks: Better throughput for both random access or “patterned” access. Sometimes cost becomes an issue. But still used in high end data warehouses. ...
Chapter13. Query Processing
... every block of outer relation. for each block Br of r do begin for each block Bs of s do begin for each tuple tr in Br do begin for each tuple ts in Bs do begin Check if (tr,ts) satisfy the join condition if they do, add tr • ts to the result. ...
... every block of outer relation. for each block Br of r do begin for each block Bs of s do begin for each tuple tr in Br do begin for each tuple ts in Bs do begin Check if (tr,ts) satisfy the join condition if they do, add tr • ts to the result. ...