inst
flat design下的instance
Parent Object
group, hInst, instTerm, io, pBlkg, ptn, rBlkg, sdp, topCell
Child Object
area,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,boxes,cell,group,hInst,instTerms,isAlwaysOn,isDontTouch,isHaloBlock,isIsolation,isJtagElem,isLevelShifter,isPhysOnly,isSpareGate,maskShift,name,orient,pHaloBot,pHaloBox,pHaloBox_area,pHaloBox_ll,pHaloBox_llx,pHaloBox_lly,pHaloBox_size,pHaloBox_sizex,pHaloBox_sizey,pHaloBox_ur,pHaloBox_urx,pHaloBox_ury,pHaloLeft,pHaloRight,pHaloTop,pStatus,pd,pgCellTerms,pgTermNets,props,pt,pt_x,pt_y,rHaloBotLayer,rHaloSideSize,rHaloTopLayer
hInst: inst的parent module
instTerms: instance的pin
pHalo*：placement halo相关的东西
pgCellTerms：cell的pg term
pgTermNets：cell pg term所连的net
rHalo*：route halo相关的东西
instTerm
instance的pin
Parent Object
hNet, inst, net
Child Object
cellTerm,hNet,inst,isInput,isOutput,isSpecial,isTieHi,isTieLo,layer,name,net,pd,pt,pt_x,pt_y
cellTerm: cell的term
hNet: 连接该inst term的hierarchical net，对图上红圈框住的net就是hNet,
整条到top level的net就是net,是flatten的
io
io pad或者io pin的信息
Parent Object
fPlan
Child Object
area,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,indent,inst,isAssigned,isCorner,isGapFixed,isGround,isOffsetFixed,isPower,name,offset,order,row,side,spacing,term,type
Layer
tech lef中layer的信息
Parent Object
antennaData, busGuide, cellDensity, fPlan, hInstTerm, head, inst, instTerm, layerRule, layerShape, marker, net, pWire, pinGuide, ptn, ptnPinBlkg, rBlkg, routeType, sWire, term, text, trackDef, vWire, via, viaRuleGenerate, wire
Child Object
antennaModel1,antennaModel2,antennaModel3,antennaModel4,area,backside,densityStepX,densityStepY,densityWindowX,densityWindowY,direction,extName,fillActiveSpacing,fillGapSpacing,maxDensity,maxWidth,mfgGrid,minDensity,minSpacing,minWidth,name,num,numMasks,offsetX,offsetY,pitchX,pitchY,props,spacingTables,type,width,wrongwayMinWidth,wrongwaySpacing,wrongwayWidth
这些就是tech lef中关于layer的信息，以及一些routing信息，太复杂了，暂时就不介绍了，不懂的名词可以查阅下LEF menu.
layerRule
layer中关于rule的信息
Parent Object
rule
Child Object
layer,spacing,width
layerShape
pin或者blockage在layer上的shape
Parent Object
libCell, pin
Child Object
isExceptPGNet，layer，shapes，spacing
libCell
library中的cell信息
Parent Object
bump, head, inst, term
Child Object
abstractLib,abstractView,allObstructions,baseClass,cellDensities,eeqCells,foreigns,isAbstractDefined,isBuffer,isDontTouch,isDontUse,isInverter,isIsolation,isLevelShifter,isSequential,isTimeDefined,isVDDOnBottom,layerShapeObstructions,layoutLib,layoutView,lefFileName,leftEdgeName,leftPadding,name,numBidirs,numInputs,numOutputs,numPGTerms,numPhysTerms,numRefs,numTerms,pgTerms,physTerms,props,rightEdgeName,rightPadding,shapeViaObstructions,site,size,size_x,size_y,subClass,symmetryR90,symmetryX,symmetryY,terms
baseClass：返回design中的cell的class信息,一般有这些block, core, corner, cover, none, pad
[DEV]innovus 14> dbGet head.libCells.baseClass -u
pad block core corner
eeqCells：官方解释是与电气相关的cell
foreigns: cell原点的坐标与参考原点之间的偏移量
numBidirs：cell的bidirectional term,双向term
numPhysTerms: cell的physical term,就是没有用到的term数量
numRefs: library中每个cell被例化的次数
physTerms：就是指没有用到的term
subClass: 子类型，LEF中关于macro更详细的分类，比如说：block, blockBlackBox, blockRing, blockSoft, core, coreAntenna...具体内容如下图所示：红框框就是baseClass，蓝框框就是subClass
marker
DRC marker的信息
Parent Object
topCell
Child Object
area,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,layer,message,messageId,originator,polyPts,subType,type,userOriginator,userSubType,userType
大部分都和rule有关，平时用到也不多。
net
net信息
Parent Object
bump, bus, hInstTerm, hNet, hTerm, inst, instTerm, netGroup, pWire, pd, routeType, sViaInst, sWire, term, topCell, vWire, viaInst, wire
Child Object
allTerms,area,avoidDetour,botMaskLayerNum,botOneSideSpacingLayerNum,bottomPreferredLayer,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,bus,hNets,instTerms,isAnalog,isCTSClock,isClock,isDontTouch,isExternal,isFixedBump,isGnd,isMixedSignal,isPatternTrunk,isPhysOnly,isPwr,isPwrOrGnd,isScanNet,isTrialRouted,mask,maxVoltage,minVoltage,name,numInputTerms,numOutputTerms,numTerms,pWires,preferredExtraSpace,props,rule,sVias,sWires,shieldNets,siPostRouteRepair,skipAntennaRepair,skipRouting,terms,topMaskLayerNum,topOneSideSpacingLayerNum,topPreferredLayer,vias,weight,wires
allTerms: design中所有的inst term以及top level io term
isIlmNet: 这条net是不是连着ilm module
maxVoltage: 这条net的最大电压
minVoltage：这条net的最小电压
pWires: patch wire
sVias: special via
sWires: special wire
vias: regular via
wires: regular wire
weight: net weight, 指net的权重，可以参考下文
剩余的大部分都是routing本身的属性，和dbGet并无太多关系
netGroup
net group信息
Parent Object
busGuide, fPlan, pinGuide
Child Object
excludeNet,isCompact,isGuided,isOptimizeOrder,isSpread,keepOutSpace,name,nets
pBlkg
placement blockage信息
Parent Object
fPlan
Child Object
area,attr,boxes,density,inst,isNoFlop,isPushdown,name,shapes,type
pd
power domain信息
Parent Object
group, inst, instTerm, term, topCell
Child Object
core2Bot,core2Left,core2Right,core2Top,extBot,extEdges,extLeft,extRight,extTop,gapBot,gapEdges,gapLeft,gapRight,gapTop,group,isAlwaysOn,isDefault,name
这里基本上就是low power的基本信息，这些内容和dbGet本身没太大关系.
pin
lef中的port信息
Parent Object
term
Child Object
allShapes,class,layerShapeShapes,portNumber,shapeViaShapes
这里基本上就是lef中关于pin定义的那些physical信息
pinGroup
lef中的port信息
Parent Object
term
Child Object
allShapes,class,layerShapeShapes,portNumber,shapeViaShapes
这里基本上就是lef中关于pin定义的那些physical信息
pinGuide
pin guide信息
Parent Object
fPlan
Child Object
area,boxes,cell,layerPriority,layers,name,netGroup,pinGroup
ptn
ptn就是partition的信息
Parent Object
hInst, topCell
Child Object
cloneHInsts,cloneInsts,clones,coreSpacingBot,coreSpacingLeft,coreSpacingRight,coreSpacingTop,isBlackBox,isCommited,master,masterHInst,masterInst,minPitchBot,minPitchLeft,minPitchRight,minPitchTop,name,pHaloBot,pHaloLeft,pHaloRight,pHaloTop,pinLayersBot,pinLayersLeft,pinLayersRight,pinLayersTop,pinToCornerDist,rHaloBotLayer,rHaloSideSize,rHaloTopLayer,railWidth,reservedLayers,stdCellHeight
cloneHInsts: 如果partition还没有commit,或者不是blackbox,返回clone hinsts
cloneInsts:如果partition已经commit或者是blackbox,返回clone insts
masterHInst: 如果partition还没有commit,或者不是blackbox,返回master hinsts
masterInst: 如果partition已经commit或者是blackbox,返回master insts
ptnCell
ptn cell的信息
Parent Object
head, inst, pinGroup, term
Child Object
isVDDOnBottom,name,numBidirs,numInputs,numPGTerms,numPhysTerms,numRefs,numTerms,pgTerms,physTerms,pinToCornerDist,props,symmetryR90,symmetryX,symmetryY,terms
前文lib cell中有解释
ptnPinBlkg
partition pin blockage信息
Parent Object
fPlan
Child Object
box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,layer,name
pWire
patch wire，补丁，在advance node中用做金属，修补DRC使用
Parent Object
net
Child Object
box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,layer,mask,net,pt,pt_x,pt_y,rule,status
rBlkg
routing blockage信息
Parent Object
fPlan
Child Object
area,attr,boxes,designRuleWidth,inst,isExceptPGNet,isPGNetOnly,isPushdown,layer,name,shapes,spacing
resizeBlkg
size blockage信息
Parent Object
fPlan
Child Object
area,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,isResizeable,name
row
row信息
Parent Object
fPlan
Child Object
area,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,name,numX,numY,orient,site,stepX,stepY
shape
shape的一些信息
Parent Object
layerShape, pBlkg, rBlkg
Child Object
mask,path,poly,rect,rect_area,rect_ll,rect_llx,rect_lly,rect_size,rect_sizex,rect_sizey,rect_ur,rect_urx,rect_ury,type
shapeVia
via的形状
Parent Object
libCell, pin
Child Object
botMask,botRects,cutMask,cutRects,pt,pt_x,pt_y,topMask,topRects,via
site
site的信息
Parent Object
fPlan, head, libCell, row
Child Object
class,name,size,size_x,size_y,symmetryR90,symmetryX,symmetryY
class：site的类别，一般包括core, pad
sVia
special via信息
Parent Object
net
Child Object
botMask,botRects,cutMask,cutRects,net,props,pt,pt_x,pt_y,shape,shieldNet,status,topMask,topRects,userClass,via
sWire
special wire信息
Parent Object
net
Child Object
area,beginExt,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,endExt,geomType,layer,mask,net,polyPts,props,pts,shape,shieldNet,status,userClass,width
term
top level io port信息
Parent Object
bump, bus, hInstTerm, hTerm, inst, instTerm, io, libCell, net, pinGroup, ptnCell, topCell
Child Object
antennas,bus,cell,depth,groundSensitivity,inOutDir,isClk,isInput,isOutput,isScanClk,isSpecial,isTieHi,isTieLo,layer,mustJoin,name,net,orient,pStatus,pd,pins,props,pt,pt_x,pt_y,rule,shape,side,supplySensitivity,type,width
topCell
top cell下面的信息
Parent Object
fPlan, head, pinGroup, pinGuide, term
Child Object
bumps,designLib,designView,fPlan,hInst,insts,isProtoModelCommitted,isProtoModelSpecified,isVDDOnBottom,markers,name,nets,numBidirs,numInputs,numInsts,numNets,numPGTerms,numPhysInsts,numPhysNets,numPhysTerms,numTerms,pds,pgTerms,physInsts,physNets,physTerms,pinToCornerDist,pkgComponents,pkgObjects,props,ptns,statusClockSynthesized,statusDetailRouted,statusGRouted,statusIoPlaced,statusPlaced,statusPowerAnalyzed,statusRCExtracted,statusRouted,statusScanOpted,symmetryR90,symmetryX,symmetryY,terms,texts
trackDef
Def中关于track的信息
Parent Object
fPlan
Child Object
dir,isSameMask,layers,mask,numTracks,start,step
via
regular via的信息
Parent Object
head, rule, sVia, shapeVia, via
Child Object
botMask,botRects,cutMask,cutRects,net,pt,pt_x,pt_y,rule,status,topMask,topRects,via
wire
regular wire的信息
Parent Object
net
Child Object
area,beginExt,box,box_area,box_ll,box_llx,box_lly,box_size,box_sizex,box_sizey,box_ur,box_urx,box_ury,direction,endExt,layer,length,mask,net,pts,rule,status,width
关键的那几个:term,hterm,hinstTerm,net,hNet,inst,hinst区别就行，剩余的大都是physical本身的一些概念
